What is the sticky coating on the outside of cells that keeps them joined together? the extracellular cytoplasm the extracellular cytosol the extracellular matrix the extracellular protein

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.