Astudent drew the following model. carbon dioxide + water- -(light) - -> sugar + oxygen. what does the model represent

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his 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

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?