Which of the following answer choices represents a non-point source of water pollution?
O Toxic waste given off by a chemical research facility
O Exhaust given off by car tailpipes
O Emissions ejected out from smokestacks
Fertilizers carried away from farmlands by rainwater

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.

Aboy with an extra x chromosome probably has which of the following syndromes?

What organelle other than the nucleus houses dna in a eukaryotic cell?