The oak tree and maple trees in your backyard are home to two owls, a colony of ants, three mushrooms, four squirrels, and about a million bacteria. together, all these organisms are

What's the waste product of electrons and pyruvate combining in fermentation?  

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?

Compare the parts of a cell and the cell as a whole to another common nonliving system (i. e., a car, a city, describe the parts of a cell and their primary function.