The man function of this body system is to... A. Sense odors in the environment
B. Exchange gases with the environment
C. Chew food as it enters the mouth
D. Tear particles that enter the nose

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point