Answer:
you said ten points I only see five
Explanation:
They increase pressure. I think. It might be wrong though
Mass extinctions occur for many reasons. Changes in the environment might make it impossible for the local life to survive, diesease or drought might strike, or there might be a natural disaster. These extinctions make good divisions in geologic time because they are easy to locate over a wide area and mark a definitive change in the Earth's systems.
Answer:
This is an example of bartering.
Explanation:
Bartering is when you trade goods or services, <em>for </em>goods or services.
<em>So, your answer is A. Bartering.</em>