1-7 please i really need help

Why are index fossils useful for determining the age of other fossils or rock layers?

How does adaptation help an organism?
1 point
It helps the organism change colors
It improves its ability to survive and reproduce
It improves its ability to change species
It helps the organism become a fossil
If one animal or plant has the same characteristics as another, they may both be part of the same...
1 point
Evolution
Planet
Species
Fossil
Where do scientists look for evidence of evolution? *
1 point
In the layers of the Earth
In caves
In water
In old books
What is a fossil? *
1 point
A layer of sediment
A living organism
A very old organism
Remains of a once-living organism
The fossil record provides evidence about *
1 point
The age of rocks
The order in which species have existed
The number of layer the Earth has
The composition of minerals
All living things inherit similar traits from their
1 point
Ancestors
Evolution
Fossils
Descendants
If you compared two kinds of living organisms, what might you learn about their history? *
1 point
How long ago they evolved
Whether they share a common ancestor
Whether they live in the smae place
Whether they can mate and reproduce
What do organisms inherit from their ancestors? *
1 point
Mammal characteristics
Traits and DNA
Hind limbs
New traits
What does the similarity between humans, dolphins, cats and bats indicate? *
1 point
They all evolved recently
That their ancestors lived in the same place
They share a common ancestor
That they are becoming more alike
Fossils provide evidence that Antarctica was once located *
1 point
At the North Pole
Near the equator
At the South Pole
Where it is now
What does natural selection explain about a population of organisms *
1 point
How long it has been since it evolved
How it changes in response to its environment
How it resists change
How likely its members are to leave fossils
Which individuals in a population are most likely to survive and reproduce? *
1 point
The largest ones
The ones with the most DNA
The best adapted ones

A: A bright, egg shaped form. B: Dust, gas, and stars in a nonuniform arrangement. C: Dust, gas, and stars in the shape of a pinwheel.
Use the drop-down menus to identify each type of galaxy pictured.
Galaxy A:
Galaxy B:
Galaxy C:

What is the answer to number 2??

Which source of evidence for evolution is the weakest?

What are the substances?

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is it right to like girls

If a scientist conducts an experiment on plants and uses 1,000 plants in the control group and 1,000 plants in the test group, why is it still important that someone else be able to replicate the experiment and get similar results?
A. to help the experiment get published
B. to study the original methods and design new experiments
C. to confirm the original data and methods
D. to allow beginning scientists to practice designing experiments

Will get brainliest for correct answer :)
No links please

Which of the following units are in order from smallest to largest?
a) Epoch, period, era.
b) Era, epoch, period.
c) Period, era, epoch.
d) Epoch, era, period.

How is mankind amping up the greenhouse effect?

True/False: Animal viruses can only infect animal cells.

Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells.

Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?

A
tree trunks that become smaller branches and twigs

B
a tight flower bud that has opened into a full bloom

C
whole apples that are sliced into separate wedges

D
a bridge that crosses two rivers

How do different climate zones respond to severe weather?
What challenges does each climate zone face?
How can that climate zone be best prepared for severe weather?
Which climate zone is the safest to live in? Why?

How are SA node cells similar to nerve cells?

Which image shows water being used in industry?

Grass being watered by a sprinkler.

Water spraying over machinery.

Water being used to wash dishes.

Please help I don't understand

Carnivores and herbivores are both consumers. Which statement best describes how they differ from one another?

A) Carnivores produce all the energy they need

B) Carnivores only eat animals whereas herbivores only eat plants

C) Carnivores eat living organisms whereas herbivores eat organisms that have died

D) Carnivores obtain energy by eating food whereas herbivores obtain energy from sunlight

i will give brainlst if the answer is right

Think of some examples of competition among organisms. What are some things they would need to compete over?

can someone please help me explain I don't understand