Ababy elephant weighs 200 pounds at birth. seven years later, the elephant's weight is 3,000 pounds.

solve for the rate of change of the weight of the elephant. choose your answer from the following:

a) 400 pounds per year

b) 429 pounds per year

c) 457 pounds per year

d) 466 pounds per year

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? the wings are analogous structures that evolved differently and do not have a similar internal structure. the wings are homologous structures that evolved differently and do not have a similar internal structure. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. wings of bats are vestigial structures, but the wing structures of birds are not vestigial.

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.