Select the correct answer from each drop-down menu.
Drill bits are attached to power drills to make holes. Drill bits are made of because they’re hard and resistant to corrosion. The bodies and handles of power drills are made of because they’re good insulators.

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

How does a gymnosperm prevent itself from pollinating the same tree

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them