How long were simple microsocpic organisms the only life forms on earth?

What is the purpose of the circulatory system?

How many cells does the human body have?

Adaptive radiation A. reduces the size of prosperous ecological communities. B. increases extinction rates. C. allows new species to occupy different habitats. D. observes trends in the fossil record.

How are nucleotides connected to make a polymer?

How do solid solutions and gas solutions form.?

Organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell

How much do landscape features on the moon change over time compared to landscape features on Earth? Explain your answer.

Why is it extremely dangerous to eat the "destroying angel" mushroom?

Based on the data collected the highest rising bread would use yeast warm water and the addition

Explain how organisms contribute to fossil fuels.