Why is the ability to bioluminesce beneficial?
a) food may be found even in the darkest parts of the ocean or at night
b) signals may be sent out to communicate an interest in mating
c) the light may momentarily distract predators, allowing the organism a chance to escape
d) it can camouflage the underbelly of the fish by lighting it up the same color as the sea surface so that the fish will be almost invisible to predators swimming below
e) all of the above
E
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Which of the following can have a significant effect on a river?
A) rises and drops in sea level B) tectonics C) types of bedrock in the river D) changes in climate E) All of these are correct.
An uncharged particle in the nucleus of an atom is a(n) ____
a. neutron b. proton c. ion d. isotope e. electron
Extremophiles are organisms that live in extremely hot water. Indicate whether the statement is true or false
A recently cut tree exhibits a very narrow set of tree rings for a period of ten years. What can you hypothesize about local climate during the ten years in which the tree produced the narrow rings?
A. It varied between warm, wet years and cool, dry years. B. It was cool and/or dry. C. It was warm and wet. D. There is not enough data to answer.