Walking home from work late one night, jaydra suddenly hears footsteps behind her. her heart pounds, her muscles tense, and her mouth goes dry. these bodily responses are activated by her nervous system.

Which structure in the cardiovascular system connect arteries to veins?

Energy stored in the bonds that hold together the atoms and molecules of all substances is called a. kinetic energy. b. electrical energy. c. mechanical energy. d. chemical energy.

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes