Which mineral may contribute to high blood pressure?

a. potassium
b. calcium
c. sodium
d. iron
e. iodine


ANSWER: c

Biology & Microbiology

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A time lag in the response of survivorship and fecundity to a population's density can occur because ____ is usually

determined by the availability of resources at some time in the past.

a. death b. immigration c. fecundity d. competition e. population growth

Biology & Microbiology

In the internal leaf structure shown above, the item labeled "3" is

a. a vascular bundle. b. spongy mesophyll. c. epidermis. d. a stoma. e. palisade mesophyll.

Biology & Microbiology

________ competition occurs when some competing individuals obtain enough resources for themselves while denying resources to others

Fill in the blank(s) with correct word

Biology & Microbiology

The jaw structure of hominid fossils reveals two trends in hominid evolution. Which of the following best describes these trends?

A) As hominids evolved, their jaws became larger and the angle at which the jaw protrudes from the face increased. B) As hominids evolved, their jaws became larger and the angle at which the jaw protrudes from the face decreased. C) As hominids evolved, their jaws became smaller and the angle at which the jaw protrudes from the face decreased. D) As hominids evolved, their jaws because smaller and the angle at which the jaw protrudes from the face increased

Biology & Microbiology