Sea turtles are likely to die when they are young, but have a good chance of surviving once they reach
large size. Which survivorship curve best fits them?
a. Type I, which is graph A
b. Type II, which is graph B
c. Type I, which is graph C
d. Type III, which is graph C
e. Type III, which is graph A
D
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The four most abundant elements needed by the human body are carbon, hydrogen, oxygen, and nitrogen. Because these are needed in large amounts to support our cells, these are referred to as
A. buffers. B. bulk elements. C. essential elements. D. trace elements. E. isotopes.
Which of the following is NOT involved in the
nitrogen cycle? a. denitrification b. weathering c. nitrogen fixation d. ammonification e. decomposition
What type of animal can both donate and receive sperm?
A) one that reproduces asexually B) one that has only male gonads C) one that is called a hermaphrodite D) one that undergoes copulation
Why is the total biomass of secondary consumers normally less than that of primary consumers?
What will be an ideal response?