Which compound is most likely to cause atmospheric warning?
a. acid rain
b. carbon dioxide
c. nitrate
d. phosphorous

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

All eukaryotic cells contain small bodies called