Changes in the human species since the time of the first humans is an example of 

A. evolution.
B. hydrolysis.
C. life.
D. metabolism.


A. evolution.

Biology & Microbiology

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In males, the primary source of estrogens is the ________

A) hypothalamus B) heart C) adrenal cortex D) ovaries

Biology & Microbiology

Ancestors of ____ may have possessed mitochondria, which were lost or reduced during evolutionary history

a. Paramecium b. Laminaria

c. Amoeba d. Euglena e. Giardia

Biology & Microbiology

Four of the five statements below apply to the phosphorus cycle. Which one does not apply?

a. Phosphorus cycles from land to water and back again. b. Phosphorus does not exist in a gaseous state. c. Dissolved phosphorus enters aquatic ecosystems from the atmosphere. d. Phosphorus will probably be depleted during the 21st century. e. Erosion from clear-cutting and agriculture accelerate phosphorus loss.

Biology & Microbiology

Which of the following has/have developed antibiotic resistance?

A. gonorrhea B. enterococci C. malaria D. tuberculosis E. All of these diseases and organisms have developed drug resistance.

Biology & Microbiology