The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual processes or ____ _.
1 answer:
A:a large comet or asteroid striking earth
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I belive the correct answer is D
The use of cars can cause chemical pollution by the release of carbon in the air.
Answer: they are used to measure and keep things precise during constuction
Explanation: because if you watch videos and look up info and research it tells you about their jobs and what they use for their jobs
potential energy
you have potential energy when you're stopped. you have kinetic energy when you're moving. so as you're going down a hill, kinetic energy is increasing and potential energy is decreasing.
Answer:
A- DNA
B- Histone
C- Chromosome
D- Nucleus
Explanation:
EDGE 2020
