What is one way that wetlands protect New Orleans? A. They absorb waves from storms.
B. They create natural levees around the city.
C. They channel floodwaters out of the city during storms.
D. They do not help.

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above