Which is an example of an ecosystem?

a. a river

b. the sun

c. your body

Which sequence correctly shows the path of carbon dioxide during repiration?

Which of the following typically characterizes a tropical rainforests

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla