When did the ordovician period end?

During the last Ice Age, deer mice in Michigan became separated by a large glacial lake and are now two different species. Identify the mode of speciation. A. Populations were separated through geographical isolation. B.

What happens during primary succession?

Ten percent of energy is transferred from one level to the next level on the energy pyramid. What happens to the other 90% of energy? A. It is stored as fat. B. It is given off as heat. C. It is stored as a protein. D. It is used in reproduction.

In what state of matter are particles vibrating but locked in place? Gas Liquid Solid Plasma

The Greeks assigned what magnitude to the brightest star seen the night sky? 1

Describe how a person can count the rate if beating of the left ventricle.

All animals that swim freely in the ocean are known as ... ?

Cell structure responsible for excretion of cell waste

Which trophic level contains the organisms that are source of all chemical energy used in an ecosystem

What is the largest latitude one can reach