Which of the following would be an example of an ecoregion? A. Antartica
B. A backyard
C. The United States
D. A small section of the Mississippi River

Which is one example of a phenotypic change that is not genetic

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis

In which part of the body is a ball-and-socket joint found?