Explanation:
This much is undeniable. Based on the magnetic fingerprints locked into ancient rocks, we know that over the last 20 million years, magnetic north and south have flipped roughly every 200,000 to 300,000 years (this rate has not been constant over the planet's lifetime, though).
This could weaken Earth's protective magnetic field by up to 90% during a polar flip. Earth's magnetic field is what shields us from harmful space radiation which can damage cells, cause cancer, and fry electronic circuits and electrical grids.
Answer: A) Non shared environmental influences
Explanation: Non shared environment influences are any aspects of the environment and any influences that can be different for different children within the same family. In this case , Jack was encouraged to run because he is a boy thereby enabling him to be able to run up the hill much faster than Jill despite the fact that they are both children in the same family.
It can be from how they are feeling the germs keep building up
Answer:
Acetylcholine
Explanation:
Acetylcholine is an organic chemical that functions in the brain and body of many types of animals and humans as a neurotransmitter.
The answer is D. requires communication between cells and an organ system.
Explanation: Just be happy I answered the question for you!✔
