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denpristay [2]
3 years ago
9

The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer

time periods. What is this an example of? directional selection disruptive selection ecosystem selection stabilizing selection
Biology
1 answer:
snow_tiger [21]3 years ago
3 0

Answer: directional

Explanation:

Because only one trait was favored. When bears are cold, being bigger helps them better adapt to the coldness. Adjusting to the weather is one trait.

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The angle of Earth's tilt has changed throughout Earth's history and is still changing today. If Earth's tilt were to decrease
olganol [36]

Answer:

The world climate would drastically change.

Explanation:

  • First off, both poles would have rapid expansion, with the freezing of more water near the poles.
  • Many species of trees and plants would die out in certain areas, since they tend to be in their ideal locations, so the change in climate will make the northern parts of many habitats destroyed.
  • Deserts would expand and the average temperature would rise.
  • Also, many animals would also die out, because of the change in their environments.
  • Conifers would shift southward, causing many forests / parts of forests to turn into wastelands, causing the earth's oxygen production to decrease.
8 0
3 years ago
Why are the size of our muscles partly an acquired trait and partly dependent on DNA?
Leona [35]
Actually, it is both acquired and part of your DNA. There is a logical <span>explanation but you have to figure that out on your own.</span>
8 0
3 years ago
A patient breaks a leg. predict which model a doctor will use to show where the break is
VMariaS [17]

A doctor can use a 2D image model to show where the break is.

When a patient breaks a leg (the break could be as a result of fracture or bone dislocation), the doctor needs to scan the patient in order to determine the exact location of the break and the extent of the injury.

The gamma camera, x-ray machine and PET scanners are some of the devices that can be used to scan a bone.

Each of these devices uses 2D image technology to show the result of the scan.

So, a model that can be used by a doctor to determine the location of the break is 2D image.

Read more about bone breaks at:

brainly.com/question/24442936

4 0
2 years ago
_____ may live in soil in water or even the other animals as parasites
Zigmanuir [339]

Answer:

My guess is worm

5 0
3 years ago
Found evidence that the continents were joined together at one time.
nikdorinn [45]
Alfred Wegener, is who proposed the idea of Pangaia
7 0
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