1. the ecosystem will break down if ______is (are) not constancly supplied or re

Question

1. the ecosystem will break down if ______is (are) not constancly supplied or recycled. a. energy b. matter. c. both energy and matter or d. neither

2. energy is ______pollution?. a. a cause of b. a possible solution of c. both

3. of the following cities which would have the shortest growing season?
a. berlin germany b madrid spain c moscow russia d . london england e. bucharest romania. or ab. helsinki finland

4. the air pressure in miami fl is __________than denver co ? a. higher, b lower, c the same as

5. populations can __ be controlled by changing the limiting enviromental factors
a. never, be sometimes, c. often d always


6. the concept of dynamic equallibrium means that a. populations and enviromental factors change dramatically b. pop and env factors may change but they remain relatively the same c poplations change, but env. factors do not. d pop.. remain relatively constant, but env. factors do not

Explanation / Answer

1. A 2. C 3. B 4.B 5.A 6.D

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