Which of the following is a nonpoint-source of water pollution? O A. A sewage treatment plant
O B. An oil refinery
O c. A factory
O D. A suburban development

Which of the following is not a type of epithelial cell

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective

Tay-sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. which cellular organelle must be involved in this condition?