Upon closer examination, the fish appeared to have died from a lack of oxygen. What time of day did the fish most likely die?
A) Late at night
B) Just before dawn
C) In the middle of the afternoon
D) At sundown
B
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The species area effect applies to all of the following EXCEPT _____
a. islands b. lakes c. mountaintops d. nature preserves e. habitats isolated from each other
Intermediates in the breakdown of __________
can be diverted into glycolysis and the Krebs cycle. a. carbohydrates b. lipids c. proteins d. all of these e. carbohydrates and lipids only
Endergonic reactions ____.
A. result in products with less energy than the reactants B. require a net input of energy C. occur in the breakdown of glucose D. are used by cells to provide energy for biological reactions E. break down large molecules into smaller molecules
Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a bird eats the spider. Based on the organisms involved in this study, what level of organization is he studying?
What will be an ideal response?