10. What can contaminate a river as a result of dredging?

a. potash

C. placer deposits

b. seawater

d. muddy sediments

What does the marijuana does to your brain?

What conclusion would be most appropriate about the genetic variation between humans and the 3 apes as illustrated by the phylogenetic tree

Which of the following best describes the air particles inside an air-filled balloon and the water particles inside a water-filled balloon? A) Both have particles that bounce far off and collide.

Which system is found in a baboon, but not in a flatworm? A respiratory system A nervous system A digestive system

You do a Gram stain on the Gram standard culture and all you seeare red bacteria. What can you conclude? A. You may have decolorized too long. B. The culture could contain Staphylococci that are older than 24hours C.

According to the plate tectonics theory, what provides the energy for the constructive forces on earths surface?

What is the direct source of energy for phototrophs

Which best describes the effects of hurricanes? A. Hurricanes tend to deposit more sediment than they remove. B. Hurricanes have storm surges that cause widespread flooding. C. Hurricanes have wind gusts that are fast but generally weak. D.

Large amounts of atmospheric carbon dioxide are absorbed by a.) animals b.) oceans c.) volcanoes d.) petroleum

What does yeast metabolize?