4. The most critical factor in controlling the human population
growth is
A. controlling reproductive lifespan.
B. decreasing the time of first birth
C. decreasing the average number of births per woman
D. decreasing infant death
6. Populations of predators increase when the population of
prey is high because...(Please highlight all that apply).
A. predator's nutrition is better.
B. it is easier to find a prey.
C. the prey population may be weakened by competition for
resources.
D. reproductive output may increase.
18. Energy and matter flow through ecosystems. Matter
flows in a cycle called _____.
21. Water and temperature affect the type of vegetation that
grows in a region. Which statement(s) are true? Highlight
all that apply.
A. As one goes from the equator to the poles, the
temperature gets colder.
B. As one goes from low altitude to high altitudes, the
temperature gets colder.
C. As one goes from low altitude to high altitudes, the
temperature gets warmer.
A. As one goes from the equator to the poles, the
temperature gets warmer
26. Shallow regions of lakes and oceans is where most life
exists. True or False.