PLS HELP ME I NEED THIS IN 1 MINUTE I AM BEING TIMED AND I'M SO CONFUISED PLEASE!!!
When does a solar eclipse occur?

when the moon's umbra covers the sun
when the earth's umbra covers the sun
when the moon's umbra falls on the earth
when the earth passes between the moon and the sun

Answers

Answer 1

Answer:

Explanation:

Answer 2
When the moon umbra covers the sun. Why: bc

Related Questions

Identify at least one environmental, economic, social, and political issue for population growth(human)

Answers

Answer:

Overpopulation is associated with negative environmental and economic outcomes ranging from the impacts of over-farming, deforestation, and water pollution to eutrophication and global warming.

Explanation:

These are some environmental problems, due to human population growth.

explain micronutrients

Answers

Micronutrients are essential dietary elements required by organisms in varying quantities throughout life to orchestrate a range of physiological functions to maintain health.

Answer:

Micronutrients are vitamins and minerals needed by the body in very small amount

Explanation:

because the definition match

1. Warm Up: How do scientists estimate how old fossils are (and thus, estimate
how long ago certain creatures were alive, and how long the earth has existed)?
Explain what you already know about this topic.

Help me

Answers

Answer:

Radiocarbon dating

Explanation:

Radiocarbon dating is a technique for determining the age of carbon-based materials derived from live beings. By measuring the quantity of carbon-14 in a sample and comparing it to an internationally accepted reference standard, an age may be determined. Radiocarbon dating is based on the basic principle that all living organisms absorb carbon from the atmosphere and food sources around them, including a small quantity of naturally radioactive carbon-14. When a plant or animal dies, it stops absorbing carbon, but the radioactive carbon it has stored decays.

For many decades scientists thought I
molecules that carry genetic information, not DNA.
were the

Answers

Answer:

proteins in chromosomes

Explanation:

A _____ cell is one that has two copies of each chromosome.

a haploid

b monoploid

c somatic

d diploid

Answers

A diploid cell is one that has two copies of each chromosome and is denoted as option D.

What is a Diploid cell?

This type of cell has two copies of each chromosome which is usually from the mother and father.

Haploid cells on the other hand have only one set of chromosome thereby making it the most appropriate choice.

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What is a tricarboxylic acid cycle?

Answers

Answer:

The citric acid cycle also known as the Krebs cycle or the TCA cycle is a series of chemical reactions to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.

Which is an unseen factor that affects the carrying capacity of the ocean?(1 point)

Answers

Sunlight is an unseen factor that affects the carrying capacity of the ocean.

What is Carrying capacity?

Carrying capacity may be defined as the maximum number of individuals that can be supported by a habitat.

The other options under this question are water chemistry, water availability, space, and sunlight.

Water availability and space both are unlimited in the ocean habitat, while the water chemistry remains the same throughout the ocean.

Therefore, sunlight is an unseen factor that affects the carrying capacity of the ocean.

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A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple?.

Answers

Answer:

2/4 OR 1/2 OR 50%

Explanation:

I JUST TOOK THE TEST

2.
Which is the main function of carbohydrates in the body?

to provide energy
to make hormones
to make nucleic acids
to provide lipids for nutrition

Answers

Answer:

it provides energy to the body.

Provides energy (long term)

How are water molecules able to bond to each other?

Answers

Water has a remarkable ability to cling to itself and other substances. The propensity of water molecules to be attracted to other water molecules, allowing water to be a "sticky" liquid, is described by the property of cohesion.

Which bond is present between water?

The difference in charge between slightly positive hydrogen ions and other, slightly negative ions causes hydrogen bonds, which are electrostatic forces.

Hydrogen bonds form between adjoining hydrogen and oxygen atoms of adjacent water molecules in the case of water. A hydrogen bond is formed when individual water molecules attract each other.

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If a scientist is conducting an experiment about obesity and asks a group of people to stop eating saturated fat, that group of people is called:
the control group.
the experimental group.
the qualitative group.
the quantitative group

Answers

Among the groups involved in an experiment, the experimental group is the one influenced by the independent variable -treatment-. Option B. Experimental group.

What is the experimental group?

During an experiment the researcher compares at least two groups: a control group and an experimental group.

Both of them are composed of individuals coming from the same population, so they are identical in all aspects except for the independent variables.

The experimental group is the one that receives the treatment. The researcher voluntarily changes the values of the independent variable to observe how it affects the individuals subjected. There can be several experimental groups.

In the exposed example, the independent variable is eating saturated fat.

Among all the individuals involved in the experiment, the group that stops eating saturated fat is the experimental group.

The researcher eliminates saturated fat from the diet of the experimental group to observe how it affects the weight of individuals.

Option B is correct. The experimental group.

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If a scientist is conducting an experiment about obesity and asks a group of people to stop eating saturated fat, that group of people is called the experimental group. Thus, the correct option is A.

Define experimental group in scientific study?

A experimental group in scientific study is defined as the researcher compares at least two groups during an experiment, a control group and an experimental group.

Because they are both made up of people from the same population, they are identical in every way except for the independent variables.

The therapy is administered to the experimental group. The researcher willingly alters the independent variable's values to see how it impacts the people who are being studied. Several experimental groups are possible.

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How can water from a small stream on a mountain north carolina affect an estuary that is hundreds of miles away ?

Answers

Water from a small stream on a mountain in North Carolina can affect an estuary that is hundreds of miles away so that pollution can accumulate and damage the estuary from the small stream.

What is an estuary and why is it important?

The importance of estuaries is very relevant. Estuaries provide food and habitat to a very wide range of living beings with a decisive role in the marine food chain, where we can highlight several species of fish with commercial value.

With this information, we can conclude that water from a small stream on a mountain in North Carolina can affect an estuary that is hundreds of miles away so that pollution can accumulate and damage the estuary from the small stream.

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Answer quickly please

Answers

B, the others are not testable under lab conditions.

Where does photosynthesis happen in algae and plants

Answers

Photosynthesis occurs in the chloroplast of algae and plants. Details about photosynthesis can be found below.

What is photosynthesis?

Photosynthesis is the process whereby green plants and algae produce food molecules by themselves using energy from sunlight.

Photosynthesis occurs in a compartment of a cell called chloroplast and it harbors a pigment that traps sunlight called chlorophyll.

Therefore, photosynthesis occurs in the chloroplast of algae and plants.

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Fossils change through a section of rocks because ______. Multiple choice question. each species has its own level of magnetism, with some species being magnetically drawn closer to Earth's core different species were alive during different periods of time the heavier fossils move to the bottom of the rock layers, and the lighter fossils remain closer to the surface

Answers

the organism at the lowest level is a more simpler organism but as years pass each layer we can see how that organism is evolving to become more complex. Each layer contains a organism developing and becoming more complex. After the organism has been buried, more sediment, volcanic ash or lava can build up over the top of the buried organism and eventually all the layers harden into rock.

Informed consent is an important outcome of what principle?.

Answers

Answer:

The principle of autonomy

The answer is the principle of autonomy.

What does the principle of autonomy mean?

In medical practice, autonomy is usually expressed as the right of competent adults to make informed decisions about their own medical care. The principle underlies the requirement to seek the consent or informed agreement of the patient before any investigation or treatment takes place.

What are the four principles of autonomy?

The four principles of Beauchamp and Childress - autonomy, non-maleficence, beneficence and justice - have been extremely influential in the field of medical ethics, and are fundamental for understanding the current approach to ethical assessment in health care.

Autonomy definition

The definition of autonomy is independence in one's thoughts or actions. A young adult from a strict household who is now living on her own for the first time is an example of someone experiencing autonomy.

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Match each interaction with its description.
Tiles
interference competition
apparent competition
exploitation competition
Pairs
Individuals do not compete directly
for resources, but are prey for the
same predator.

Individuals interact indirectly while
competing for common resources.

An individual directly interacts and
changes the way other individuals
attain resources.

Answers

There is competition among species when they jostle for scarce resources.

What is competition?

The term competition has to do with a situation in which members of the same species scramble for scarce resources.

The following are the definitions of the types of competition;

interference competition - An individual directly interacts and changes the way other individuals attain resources.apparent competition - Individuals do not compete directly for resources, but are prey for the same predator.exploitation competition -  Individuals interact indirectly while competing for common resources.

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Answer:  

Individuals do not compete directly

for resources, but are prey for the

same predator.- apparent competition

Individuals interact indirectly while

competing for common resources.- exploitation competition

An individual directly interacts and

changes the way, other individuals

attain resources.-- interference competition

Explanation: I'm 100% right, you will see!

Plastids that are surrounded by more than two membranes are evidence of.

Answers

Plastids that are surrounded by more than two membranes are evidence of: secondary endosymbiosis.

Help me pls it about cells

Answers

Plant cells and animal cells have their own different properties and structures.

What do you mean by cell?

The simplest form that can sustain life on its own and makes up all living things, including the body's tissues is called a cell.

1. Both plant cell and animal cell.

2. Plant cell

3. Eukaryotic cell

4. Plant cell

5. Plant cell

6. Plant cell

7. Animal and plant cell

8. White blood cell and amoeba

9. Both animal and plant cells.

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Why can't populations continue to keep growing and growing?

Answers

Answer:

That would lead to overpopulation.

Explanation:

If overpopulation became severe, it could lead to increased homelessness, famine, and poverty. These things are already an issue in our world and overpopulation would make it even worse. :( I hope this helps! :)

Populations usually start moderately linear because when one person is birthed another passes away. It’s a full circle and causes us not to overpopulate. If we overpopulated then our resources would be stretched thin.

Changes in environmental conditions always result in new ecosystems and loss of biodiversity characterized by an increase in the number of some species, the evolution of new species, and the extinction of some species.


Answers

Changes to the environmental conditions can indeed result in new ecosystems and a change in the species equilibrium.

Ecosystem disruption

The abiotic conditions of an ecosystem determine the kind of species that will inhabit the ecosystem

A change to the abiotic or environmental conditions will likely result in a new ecosystem entirely. Organisms that are able to adapt to the changes will gradually fade off the ecosystem while those that are able to withstand the changes will proliferate and dominate the populations of organisms in the ecosystem.

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Which of the following could result in the extinction of a species?

Answers

Increased population size will result in the extinction of a species of organisms.

What is Extinction?

This is defined as the dying out or disappearance of species as a result of various factors.

When population size increases, it leads to unavailability of food and reduction of species due to starvation and death.

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Gene therapy is the ___________ of working _______________ of a _______________ into the ____________ of a ______________ with a genetic ______________ in an attempt to _______________ the disorder.


Gene


Extraction


Correct


Person


Insertion


Cells


Disorder


Copies

Answers

Answer:

heart disease, diabetes, hemophilia and AIDS.

Explanation:

Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.

There are two different species of finch that live on the same small island, species a and species b. both species successfully feed and reproduce on the island. species a nests in pine trees and eats large seeds. species b nests in hollowed-out dead logs and eats small insects. both bird species a and species b can most likely survive on the same small island because they

Answers

Answer:

both bird species can live on the same island because they live in different environments of the island meaning they don't have to fight over the same resources. Meaning both bird species can survive.

Explanation:

Explain three cause and effect relationships between the human activities and the measurable changes in the Earth system represented in the Understanding Global Change model

Answers

Answer:

Humans are gradually altering the climate and the earth's temperature through burning fossil fuels, destroying forests, and rearing animals.

Explanation:

This significantly increases the amount of greenhouse gases already present in the atmosphere, increasing the greenhouse effect and contributing to global warming.

Climate change is mostly caused by the greenhouse effect. Some gases in the Earth's atmosphere act as greenhouse glass, trapping heat from the sun and preventing it from escaping into space, causing global warming.

Hope it helps;

Why is this discovery important to evolutionary biologists?

Answers

The discovery is not specified here but evolutionary biologists are professionals who work to discover descendence relationships between organisms.

Who are evolutionary biologists?

Evolutionary biologists are biology professionals who work to find evolutionary (ancestor-descendant) relationships between organisms.

The work of evolutionary biologists is fundamental for understanding the associations in a given taxonomic group.

In conclusion, the discovery is not specified here but evolutionary biologists are professionals who work to discover descendence relationships between organisms.

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Answer:This is the sample answer BUT I rephrased it for you.

Explanation:

The discovery might aid research into how contemporary species, like penguins, have evolved.

When did the high tide enter the nisqually estuary for the first time in over 100 years?

Answers

During the fall of 2009, the high tide entered the nisqually estuary for the first time in over 100 years.

What is Nisqually estuary?

This is formed when the freshwater of the Nisqually River meets the salt water of Puget Sound.

In the fall of 2009, the high tide entered it for the first time in nearly a century.

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HEllo ! please help me ! will give brainle with 20 points

Answers

I believe it’s B. Sorry if I’m wrong.
d!

Our graph tells us about the size of spots not number of spots.
So this knocks out a and c

So we have d and b.

Graph 1)
Our graphs shows that in Brazil most fishes have medium sized spots, that’s where the bar graph is at its highest.


Graph 2)
If we look at Venezuela, we can see that the bar is highest towards the end. Showing us that in Venezuela most of the guppy population have large spots.

Plants growing in the dark start to fall over because they can no longer
support their own weight. Students want to find out why this is happening.
Which of these is a good hypothesis for an investigation of the problem?

OA. The plants need to absorb glucose from the soil so they can have
more energy.

OB. The plants should start using protein in order to support their
bodies.

OC. The plants need sunlight so they can produce more cellulose for
support.

OD. The plants need more water in order to keep their cellulose from
breaking down.

Answers

Answer: B

Explanation: its ez

How many chromosomes does the human genome contain?.

Answers

Forty six chromosomes

see the file attached!o(〃^▽^〃)o

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Atoms are spherical in shape. Therefore, the Pt atoms in the cube cannot fill all the available space. If only 74.0 percent of the space inside the cube is taken up by Pt atoms, calculate the radius in picometers of a Pt atom. The mass of a single Pt atom is 3.240 1022 g. [The volume of a sphere of radius r is (4/3) r3. The volume of a cube is l3, where l is the length of a side. Avogadro's number is 6.022 1023.] WHOEVER ANSWERS FIRST WILL BE MARKED BRAINLIEST!On the fret board the encircled ? represents which noteA. A flat B. A sharpC. C sharpD. E Flat What is the midpoint of FB Lila invested 10000 in one of long life insurance company annuity contracts. When issued, the contract was paying a 5 percent rate of return A 5000kva 230/13. 8kv single phase power transformer has a resistance of 0. 38 ohms and reactance of 1. 9 ohms Which word does NOT name a kind of type?A) italicsB) underlineC) headingD) boldface When a substance accumulates within a living organism, it is known as ____.A: BioaccumulationB: VenomousC: Non-persistentD: Corresive Find the margin of error if p = 71% and n = 100. round to four decimal places. 0.2204 0.0041 0.0848 0.0908 According to walter, the principal problem with women is their A point that is exterior to an angle is found on the acute side of the angle. true of false? PLEASE HELP I NEED HELP BADDD PLS CORRECT ANSWERS ONLY A triangle has vertices at (2, 3), (-4, 5), and (-3, 4). What are the coordinates of the verticesof the image after the translation (x, y) (x + 1, y - 3)? Given that the quadrilateral is a parallelogram, find the values of x, y and z. Write an analytical essay in which you analyze and evaluate the techniques used in ww2 propaganda. I need an answer. What is 485-352? 2. According to this table, what characteristics does a fern have?Note: nonvascular plants do not have seeds or flowers. Only seed plants can make flowers.It is a nonvascular plant that does not have seeds or flowers.It is a vascular plant with seeds and flowers.It is a vascular plant with seeds and no flowers.It is a vascular plant that does not have seeds or flowers. Which three words in the passage suggest that Lake Powell overwhelms people with its beauty? Select the correct answer. in which career would you most likely apply concepts from geometry? a. food critic b. social worker c. radio dj d. computer game designer Debra notes that Theo Chocolate has started holding its own operations to the same IMO standards of fair trade to which it holds its suppliers. This type of behavior encourages more ethical decision-making byestablishing a specific code of ethics sends a powerful message to employees and customers. Pedro has written a program in a high-level language to do some calculations for a friend. His friend needs to use the program immediately on his laptop. Pedro does not know what software is available on the laptop. Also, his friend's internet connection is very slow. Explain which type of translator Pedro should use for his program. Give reasons why this is the best choice in this case.