Estuaries tend to be well supplied in the following limiting nutrient(s) of the open ocean:
a. phosphorus.
b. nitrogen and silica.
c. phosphorus and silica.
d. nitrogen and phosphorus.
e. carbon and oxygen.
C
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Most SIDS deaths in the United States occur ____________
Fill in the blank(s) with the appropriate word(s).
What happens during diastole?
A. The heart muscles contract, moving blood to ventricules. B. The heart muscles pause, allowing both atria to empty. C. The heart muscles relax, allowing blood to flow into all chambers of the heart. D. The heart muscles contract, moving blood to atria.
Chlorophyll and accessory photosynthetic pigments are associated with the:a
stroma. b. thylakoid membranes. c. mesophyll membranes. d. light reaction centers of the stroma lamellae. e. stroma grana.
In the oceans, global warming has ________
A) decreased the amount of oxygen available B) benefited corals C) made the water more basic D) made the water more acidic