An oil tanker spills oil into the ocean. is this point-source or nonpoint-source pollution? explain why.

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Resperation is a way to release carbon back into the atmosphere