Reference no: EM132703925
1. In a rapidly growing population such as that of Kenya, the majority of the population is
a. under 15 years of age.
b. between 15 and 30.
c. between 30 and 50.
d. older than 50.
2. If a squirrel lives in a particular tree, that tree is the squirrel s
a. fundamental niche.
b. climax community.
c. habitat.
d. realized niche.
3. Which statement would best explain why the reproduction rate in Kenya is dropping?
a. increased use of contraception and increased illness due to HIV/AIDS.
b. decreased use of contraception and increased illness due to HIV/AIDS.
c. increased use of contraception and decreased illness due to HIV/AIDS.
d. decreased use of contraception and decreased illness due to HIV/AIDS.
4. Belle is studying a population of moose on an island and the shape of the population growth curve is S-shaped, with population size plotted on the vertical axis and time plotted on the horizontal axis. Likely what accounts for the flattening of the curve at the top?
a. Aging of animals so they no longer reproduce.
b. Shortage of resources, raising the death rate and lowering the birth rate.
c. Exponential growth.
d. Density suddenly lowered.
5. Which of the following would be of least value in estimating carrying capacity for a duck population?
a. amount of food available
b. land area
c. water available
d. number of eggs produced per female
6. Which term explains a linear sequence of trophic (feeding) relationships of producers, primary consumers, and higher level consumers?
a. food web
b. food chain
c. food pyramid
d. food flow
7. Water enters the atmosphere from each of the following EXCEPT
a. transpiration from plants.
b. evaporation from lakes and streams.
c. precipitation from clouds.
d. evaporation from the ocean.
8. Which of the following statements IS NOT true about phosphates?
a. Other than nitrogen it is more likely than any other required plant nutrient to limit plant growth.
b. It is present in the soil in a readily soluble form.
c. Phosphates exist in the soil only in small amounts.
d. Animals obtain the phosphorus they need by eating plants or other plant eating animals.
9, A pollutant has been spilled from a ship and is traveling toward the ocean bottom. Arrange these habitats in the sequence that the pollutant would encounter them. (1) Abyssal zone, (2) photic zone, (3) aphotic zone.
a. 1, 2, 3
b. 3, 2, 1
c. 2, 3, 1
d. 1, 3, 2
10. Marcy is a meteorologist concerned that rainfall may decline in a country undergoing extensive deforestation. Why might rainfall decline?
a. Reduced transpiration.
b. Depletion of aquifers.
c. Pollution of groundwater.
d. Lack of nitrogen fixation.