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5. Beavers are sometimes trapped for their fur. What could be one effect of increased trapping of beavers in an area?
a. Biodiversity among the area’s fish would increase.
b. The number of herons and kingfishers would decrease.
c. There would be more nesting areas for waterfowl.
d. More trees would be cut down.

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

The two main stages of cell division are called

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.