The diversity of species in a community refers to the

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?