Which term describes an estuary?
a. Salt marsh
b. All of these choices
c. Coastal wetland
d. Mangrove wetland
e. Marine nursery
b
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Eutrophic waters
A. are nutrient rich. B. may become hypoxic. C. lack phosphate, nitrate and iron. D. contain 3.5% salt. E. are nutrient rich AND may become hypoxic.
Habitat complexity can support
a. complex life histories. b. increased biodiversity. c. higher productivity. d. more different species in an area. e. All of the above.
This image shows an area in which a glacier has melted. What is indicated by the number “2”?
a. competition for food resources b. resource partitioning between two competing species c. emergence of climax species d. colonization by pioneer species e. secondary succession
What type of joint allows you to shake your head "no"?
A. ball and socket B. hinge C. pivot D. saddle E. none of the above