What organism could complete this food chain? Grass->Grasshopper-> ___->Snake->Hawk A. Bacteria
B. Algae
C. Mouse

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

Why are current extinctions of concern to enviromentalists?

What is a general feature of a species that varies from one individual to the next (skin tone,eye color or hair color)? a.organism b.trait c.character