Which of the following is true about extinction?
a) Commercial hunting and fishing are careful not to deplete animal reserves.
b) There are many causes of extinctions and an animal or plant may go extinct for any of a combination of these factors.
c) Overexploitation by hunting and fishing is the foremost threat to tropical animals and plants.
d) Introduction of new alien species helps preserve biodiversity and slow extinction.
e) Without human activity, all species would survive and there would be no extinctions.
Ans: b) There are many causes of extinctions and an animal or plant may go extinct for any of a combination of these factors.
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The primary consumer is also
a. the second link in a food chain. b. a herbivore. c. an animal. d. a herbivore and an animal. e. the second link in a food chain, a herbivore, and an animal
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A) Xylitol B) Glucose C) Mannitol D) Sucrose E) All of the above
Facilitated diffusion in bacteria require a
What will be an ideal response?