If a response encourages the original stimulus, the system is a feedback system. a Negative
b. stable
C. positive
d. Deficient

What do we call an individual that has inherited two identical alleles for the same trait? a. homozygous b. heterozygous c. monozzygous

The most effective way to provide children with safety messages is to

The model illustrates a process by which a substance is taken up by a cell. which statements describe the process? a. the model shows the process of endocytosis. b. the process shown in the model requires energy from the cell. c. the cell membrane in the model remains intact throughout the process. d. the model shows the process of facilitated diffusion.