The large, ancient land mass that contained all the continents is known as ____
a. Laurasia
b. Pangea
c. Gondwana
d. Atlantis
e. Europa
ANSWER: b
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Which of the following is inconsistent with the current understanding of how plants and microbes interact with each other?
A. Microbes produce chemical signaling molecules that plants can react to. B. Plants are able to send chemical signals to microbes but they are not able to receive signals from the microbes. C. Plants produce chemical signaling molecules that microbes can detect and react to. D. All of these statements are inconsistent with our understanding of how plants and microbes interact with each other.
Four of the five answers listed below are secreted by exocrine glands. Select the exception
a. wax b. saliva c. hormone d. milk e. mucus
Which of the following is not an impact of acid
rain? a. It stops fish egg development b. It can burn foliage. c. It releases toxins in the soil. d. It causes eutrophication e. It can kill adult aquatic organisms
Why is there very little physical evidence of life from rocks of the Archaean eon?
a. Those rocks have been deeply buried in most parts of the world. b. Those rocks occupy inaccessible areas of mountainous regions. c. Those rocks have been greatly eroded in most parts of the world. d. Those rocks occupy the polar regions and are thus covered by glaciers. e. Those rocks have been deposited in oceanic trenches deep in the oceans.