What effects do keystone specie shave on an ecosystem?

A. They make prey species extinct

B. They reproduce biodiversity

C. They keep populations of species balanced

D. They cause primary disturbances.

The ciliated larval form of many mollusks is called the A. trochophore. B. cnidocyte. C. radula. D. nudibranch.

Carbohydrates, lipids, protiens, are types of carbon compounds that are broken down to produce A. electrons B. ATP C. lactic acid D. hydrgen ions

A higher concentration of molecules cause a faster chemical reaction This is known as__.

What muscle is responsible for contraction of the urinary bladder during micturition?

How does the arterial wall and fatty deposit relate to the nervous system?

Which of the following statements is true? Natural energy sources are nonrenewable and being depleted. Current fuels are not polluting the air. Mercury released into aquatic ecosystems comes from rock erosion.

Which causes a decrease in the amount of dissolved oxygen in a lake? A. lower temperatures B. fertilizer runoff C. overfishing

If you were to breed a black male guinea pig to a brown female guinea pig in an attempt to determine which one was homozygous dominant and which one was homozygous recessive, how could you be certain that the guinea pigs are truly homozygous?

How many chemical bonds can each carbon atom form?

What could cause mutations to occur?