Based on hierarchical levels of biological organization, which of these choices represents the broadest level?
A. Endocrine system
B. 3 toed sloths
C. School of piranhas
D. Amazon Basin
E. Jaguars, giant anteaters, macaws, capybaras
D. Amazon Basin
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Of the 13 essential vitamins, ____ are water soluble and ____ are fat soluble
a. 3; 10 b. 4; 9 c. 5; 8 d. 9; 4 e. 10; 3
An example of a prezygotic isolating mechanism is behavioral isolation
Indicate whether the statement is true or false.
Which of the following is most likely to be correct?
A) Each successional stage always makes conditions more favorable for the next successional stage. B) Each successional stage always makes conditions less favorable for the next successional stage. C) Each successional stage modifies the environmental conditions of the site.
With regard to reproduction, how do gymnosperms differ from angiosperms?
What will be an ideal response?