What does the red at the beginning of the video represent? What does this mean about the landscape around Mount St. Helens before 1980?

Answers

Answer 1

Answer:

On May 18, 1980, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states

Explanation:


Related Questions

Question 5
How do increases in the carrying capacity of Earth for people affect the carrying capacity of Earth for other species?
Select one:

It increases for most species.

It decreases for all species.

It decreases for most species.

It increases for all species.

Answers

Answer:

It increases for most species.

In animals sexual reproduction requires

Answers

Answer:

The placement of sperm within female's reproductive track.

Explanation:

In animals, sexual reproduction requires sperm of male has to be placed in the reproductive track of female where eggs are present. The sperm of male fuse with eggs of female produces zygote which turns into an offspring. The sperm of male and egg of female are haploid in nature means having half number of chromosomes but when they fused together then the zygote which is formed is diploid i.e. double number of chromosomes. The gametes are formed through meiosis not mitosis. Mitosis cell division occur in body cells.

1. the north polar constellation can be seen in the southern hemisphere.

true or false

2. the south polar constellation can be seen in the northern hemisphere.

true or false​

Answers

I believe they are both false><

1. the north polar constellation can be seen in the southern hemisphere.

"As viewed from the North Pole, all fully visible constellations north of the celestial equator are circumpolar, and likewise for constellations south of the celestial equator as viewed from the South Pole."

2. the south polar constellation can be seen in the northern hemisphere.

"The southern constellations Carina, Centaurus, and Crux are found circling the south celestial pole and can be seen from southern latitudes at any time of year while remaining invisible for observers in most northern locations."

Hope it helps

which best describes the concept of natural selection?

A. an organism will always mutate to survive
B. The fittest organisms are selected for
C. Nature selects the organisms with the most Mutations
D. mutations make organisms more fit

Answers

Answer:

D.

Explanation:

Natural selection is the way that organisms adapt through adaptations to better survive and pass on the special genes which enable the offspring to survive. Saying an organism will always mutate to survive is wrong, as natural selection implies that not all organisms survive. With natural selection, nothing is "selected", so B and C are not correct. However, mutations DO make organisms "more fit" to survive their environments, so D is the answer.

Answer: The fittest Organisms are selected for

Explanation: Just did the test :)

_____ is essential for all life within
an ecosystem.
A. Trophic
B. Water cycle
C. Predation

Answers

B) water cycle is the correct option

Protein Synthesis and Codons Practice
DNA → T T C A A T G G T C T A G G G

RNA →

Amino Acids →

Answers

Answer:

RNA AAGUUACCAGAUCCC

Explanation:

Remember A codes for U

C for G

G for C

T for A

The amino acids will be for every codon (every three letters)

I don’t have a codon chart to translate at the moment but I hope this helps:)

Paragraph
1
-C
B 6
А A
-D
6

Answers

Answer:

A :-):-):-)

Explanation:

Hope this helps:-)

HELP ASAP
Which of the following is an example of homeostasis?
Q. During a time of high stress, Justin's heart races, his muscles tense, and he feels
sweat dripping down his forehead.
R. Sick with the flu, Alison's body temperature rises to fever levels.
S. Boris doesn't drink very much water one day. To compensate his kidneys remove less
fluid from his blood, and produce less urine than normal.
T. As Grace races up the ten flights of stairs to her apartment, the muscle cells in her
legs produce excess lactic acid, causing a burning sensation in her legs.

Answers

Answer:

The correct answer is  Boris doesn't drink very much water one day. To compensate, his kidneys remove less fluid from his blood and produce less urine than normal

Hope this helps :)

Explanation:

How is Earth’s outer layer similar to a cracked hard-boiled egg?

Answers

Answer:

They're similar because both Earth's layer and a cracked hard boiled egg have a thin brittle shell.

Explanation:

The earths crust is broken up into several sections called tectonic plates just like a cracked boiled egg. The crust is also very thin similarly to the eggs shell.

The characteristic of light waves that makes objects appear bent when placed in water is called
A.Reflection
B.interference
C.bending
D.refraction

Answers

Answer:

D: Refraction

Explanation:

A: Reflection is not when light goes through water. C: Bending is not the correct term used.

What is the hallmark of a chemical change?

Answers

There are five signs that indicate a chemical reaction has occurred: odor, energy change, gas bubbles, precipitate formation, and color change. When any of these changes occur, the reaction is irreversible and cannot be undone.

What is the original biosphere, sometimes referred to as Blosphere 1?
O
a greenhouse on the Mir space station
the planet Earth
a sealed environment in Arizona
the human body

Answers

Answer:

The correct answer is - the planet Earth.

Explanation:

Biosphere 2 is the second self-sufficient biosphere that is a research center of America that is built to study, teach and research the purpose of the earth and its biosphere. It is termed biosphere 2 because the original biosphere is the primary biosphere that self-sufficient which is called biosphere 1.

Biosphere 1 is changed altered so much since it formed in various manners including the hydrosphere, atmosphere and different matter cycles.

Will give brainliest
In the producers pool, in which molecule is the carbon found

Answers

Answer:

Carbon is found in almost everything so I would assume a lot

Explanation:

Btw I dont know what the producers pool is

Space exploration can lead to money going to U.S.
businesses and universities.
What are two things NASA might hire U.S. businesses and universities to do?
A. Teach people to read
B. Improve athletic teams
C. Build complex equipment
D. Research new ideas

Answers

Answer:

build complex equipment andddd research new ideas

Explanation:

hope this helps yall!!!

Answer:

C & D

Explanation:

Ap3x

CFCs are safe on Earth's surface but become very destructive to ozone when exposed to UV
light in the upper ----------? Upper what

Answers

Answer:

CFCs are broken down by UV photolysis, but the process takes a long time since it takes decades to cycle all of the air in the troposphere through the upper stratosphere. ... The photolysis of CFCs generates a highly reactive chlorine atom that can attack ozone or form compounds that destroy ozone. upper stratosphere should be your answer

Choose the option that best matches the description given.

the study of the frequency, distribution, cause, and control of disorders in populations:

Answers

It’s a disorder i know because i have an eating disorder. but u can use that as an example !!! have fun

Answer:

Epidemiology

Explanation:

I just looked up the definition of epidemiology and the definition was the question, word for word. So like trust me, it's accurate.

Anyways, I hope this helps.

Which scientist devised tests that helped confirm that bacteria and other microorganisms cause a variety of diseases?
Robert Koch
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming

Answers

Answer:

A. Robert Koch

Explanation:

I got a 100 on the pre-test (Edgen2021)

Robert Koch made tests that helped confirm that bacteria and other microorganisms cause a variety of diseases.

Who was Robert Koch?

Robert Koch was a scientist that work to identify many pathogenic microorganisms (e.g., bacteria and fungi).

Nowadays, Robert Koch is considered the father of modern bacteriology.

Robert Koch identified many pathogenic microorganisms including Mycobacterium tuberculosis (tuberculosis) and Vibrio cholera (cholera).

In conclusion, Robert Koch made tests that helped confirm that bacteria and other microorganisms cause a variety of diseases.

Learn more about Robert Koch here:

https://brainly.com/question/1136589

Which of the following conditions is an X-linked disorder?
A.
cystic fibrosis
B.
color blindness
C.
variegation
D.
Down syndrome
E.
sickle cell anemia

Answers

I think the answer is ethier d or e

Answer:

THE ANSWER IS B I THINK

Explanation:

RJEBEJRHRHRRHRH

If you do not know the answer than do not answer. You don’t have to answer all of the questions just answer the ones you know. Will give brainliest if you help.

Answers

Answer:

a,f,d,i,c

Explanation:

help i’ll give you brainilest

Answers

It’s the 3rd answer if ur going by the picture

Oil pollution in the ocean is mostly caused by

Answers

Oil spills into rivers, bays, and the ocean most often are caused by accidents involving tankers, barges, pipelines, refineries, drilling rigs, and storage facilities. Spills can be caused by: people making mistakes or being careless.

In DNA, a sequence of three bases is a code for the placement
of a certain amino acid in a protein chain. The table shows some
amino acids with their abbreviations and DNA codes.
Which amino acid chain would be produced by the DNA base
sequence below?
C-A-A-G - T- T - A-A-A-T - T-A

Answers

G - T- T- C - A - A - T - T - T - A - T

what makes a good scientific argument?

Answers

Answer:

the claim (or the explanation), the evidence (or the observations), and the rationale (or the reasoning). Reasoning that explains the evidence and why it supports the claim.

Explanation:

Hope this helps!

Answer:

Breaking their Theory and throwing liquid chemicals at their shirt and they get fired

Explanation:

1.La energía es la capacidad de un cuerpo para producir trabajo.

2.La energía se clasifica solamente en renovables.

3.Las ondas se pueden propagar en un medio o un espacio vacío.

4. Las ondas se pueden clasificar en longitudinales y transversales.

5. La energía cinética es aquella que se encuentra en movimiento.

6. El núcleo de la Tierra está formado
por metales, principalmente hierro y níquel, y en menor
cantidad por azufre y oxígeno.

7. La corteza terrestre está compuesta por rocas
8. La contaminación se puede
definir como la presencia o acumulación de sustancias en el medio ambiente
que afectan negativamente el entorno.

9. Los elementos de la tabla periódica se clasifican de acuerdo con sus propiedades y características
similares.

II. Escoge

1. Son fuentes de energías renovables:

2. Son fuentes de energías no renovables:

3. Partes de las ondas:
15. La ciencia que estudia los seres vivos es:

16. En la biotecnología se incluyen las áreas de:

17. Consiste en la liberación de sustancias químicas a la atmósfera que alteran su composición.

18. Se debe a la presencia de desechos en el agua. La contaminación de mares, ríos y lagos se produce por
las actividades del ser humano.

19. Se debe a la acción humana (los residuos y la basura arrojada en cualquier superficie terrestre).

20. Cuando el contaminante es una sustancia química que procede normalmente de los usos industriales.

21. Surge con la emisión de fluidos a elevadascontaminación.

22. La actividad humana produce mucho ruido, y los altos decibelios en un determinado lugar por encima de sus niveles naturales marcan la contaminacion.​

Answers

Answer:

La actividad humana produce mucho ruido, y los altos decibelios en un determinó do lugar por encima de sus niveles naturales marcan la contaminación.

Explanation:

Creo que es la respuesta

The simplest nervous systems are called....

Answers

The simplest nervous systems are called [tex]\sf\purple{nerve \:nets}[/tex].

More:-This type of nervous system is found in [tex]\sf\red{hydras}[/tex] and [tex]\sf\blue{jellyfish}[/tex] (cnidarians).Nerve nets do not have a distinct central or peripheral regions, and lack anything that resembles a brain.

[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]

what seven elements have the appearance and properties of a metal but behave like the non-metal in certain situations?

Answers

Answer:

i. boron

ii. silicon

iii. germanium

iv. arsenic

v. antimony

vi. tellurium

vii. polonium

Explanation:

Elements that have appearance and properties of a metal but behave like non-metal in certain conditions are called semi-metals or metalloids. On the periodic table, they are found between metals and non-metals. Examples are astatine, polonium, tellurium, antimony, arsenic, germanium, silicon, boron.

Some of their properties that make them look like metals are:

i. They exist as solids at room temperature.

ii. They are shiny.

iii. They are ductile.

Some of their properties that make them look like non-metals are:

i. They are brittle.

ii. Not very good conductor of electricity compared to metals.

The seven elements have the appearance and properties of metal but behave like non-metal in certain situations.

I. boron

ii. silicon

iii. germanium

iv. arsenic

v. antimony

vi. tellurium

vii. polonium

Elements which have look and residences of a steel however behave like non-steel in sure situations are referred to as semi-metals or metalloids. On the periodic table, they're determined among metals and non-metals. Examples are astatine, polonium, tellurium, antimony,arsenic, germanium, silicon, and boron.

Some in their residences that cause them to seem like metals are:

i. They exist as solids at room temperature.

ii. They are shiny.

iii. They are ductile.

Some in their residences that cause them to seem like non-metals are:

i. They are brittle.

ii. Not an excellent conductor of strength in comparison to metals.

What are metals?

Metals are opaque, lustrous factors that might be the right conductors of warmth and electricity. Most metals are malleable and ductile and are, in general, denser than the opposite elemental substances.

Thus it is clear that the above answers are well explained.

To learn more about the elements  refer to the link :

https://brainly.com/question/6258301

What is accomplished during meiosis 1

Answers

Answer: However, Meiosis I begins with one diploid cell and ends with two haploid  cells, halving the number of chromosomes in each cell.

Explanation:

why are minerals important for our body? describe the 2 groups of minerals

Answers

Minerals are needed for the proper composition of body fluids, including blood, and for the proper composition of tissues, bone, teeth, muscles and nerves. Minerals also play a significant role in maintaining healthy nerve function, the regulation of muscle tone, and supporting a healthy cardiovascular system. There are two kinds of minerals: macrominerals and trace minerals.

Explanation:

.

How a terrestrial reptile will regulate body temperature if it is placed in a habitat that is extremely dry with the temperature of 55C

Answers

Reptiles are ectothermic that means they rely on external source of energy to maintain their body temperature ,they can lie in burrow to stay cool or lying down on a cool surface like mud can remove heat from the body (conduction most likely )

difference between antigens and antibodies?​

Answers

Answer:

Antigens are molecules capable of stimulating an immune response. Each antigen has distinct surface features, or epitopes, resulting in specific responses. Antibodies (immunoglobins) are Y-shaped proteins produced by B cells of the immune system in response to exposure to antigens.

Explanation:

Plz mark as Brainliest

hopes this helps

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