Monarch butterfly larvae eat milkweed, which is toxic to other insects. The toxin from the milkweed makes the butterflies poisonous to predators. Monarchs do not harm or kill the milkweed plant when they eat from it. This relationship between the butterflies and milkweed is an example of which of the following?

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

weathering is the answer.

it's c. (to reduce the greenhouse effect/carbon gasses)

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.