Complete the blanks in the following sentence from the multiple-choice selections below. Figure 1 illustrates that when orcas started eating sea otters, the sea otter population [blank 1], the urchin population [blank 2], and the kelp population [blank 3].

a. decreased, decreased, decreased

b. decreased, increased, decreased

c. increased, decreased, increased

d. dincrease, increased, increased

Can a trait be both polygenic and have multiple alleles? explain why or why not.

The smallest parts of these that retain their original properties are called

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy