Clues such as fossils such as bones, footprints, tar, etc, preserved underground helped inform scientists. You can also count how old a tree is when you cut it open and there are some alive for thousands of years so that is a possible way.
Answer:
Variation. Organisms (within populations) exhibit individual variation in appearance and behavior.
Inheritance. Some traits are consistently passed on from parent to offspring.
High rate of population growth.
Differential survival and reproduction.
Explanation:
Answer:
He could see both the earth and the sun so because he is such a smart diddly doo guy he thought that it means the sun and moon both revolve around the sun, like the tale of Narissisus who looks in the river and falls in love with himself, but dies alone because he is nothing more than an arrogant fool and thats where the term egotitsiacal narcissitst comes from, in case you didnt
know,. baby im Ecrazy about yah.xplanation:
A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.
The answer is D.
hope i helped
