bio test 1 questions missed

The hydrologic cycle includes A. biotic factors only. B. abiotic factors only. C. both biotic and abiotic factors. D. neither biotic nor abiotic factors.

A. biotic factors only

Atmospheric carbon dioxide levels are shown below. This graph was developed by measurements that were obtained by A. direct measurements on Mauna Loa, Hawaii, and from air bubbles trapped in ice. B. studies of the tissues of plants and their structures in response to differing CO2 levels. C. carbon isotope levels in sea floor sediments. D. measurements from undisturbed bat droppings in caves on a South Pacific island.

A. direct measurements on Mauna, loa, hawaii, and from air bubbles trapped in ice

Burning forests will A. increase carbon levels in the atmosphere, which will increase climate change. B. increase carbon levels in the atmosphere, which will decrease climate change. C. decrease carbon levels in the atmosphere, which will increase climate change D. decrease carbon levels in the atmosphere, which will decrease climate change.

A. increase carbon levels in the atmosphere which will increase climate change

When humans consume rice they occupy which trophic level of a food chain? A. primary consumer B. secondary consumer C. tertiary consumer D. primary producer

A. primary consumer

A population of 100 individuals has a doubling time of 25 years. What size will this population be in 100 years? A. 100 B. 400 C. 800 D. 1,600

D. 1,600

Why are there many deserts at 30° latitude? A. Dry air rises at this latitude. B. Dry air sinks at this latitude. C. Dry air cools at this latitude. D. Dry air warms at this latitude.

B. dry air sinks at this latitude

An increase in average temperatures worldwide is called A. climate change. B. global warming. C. the greenhouse effect. D. weather pattern shift.

B. global warming

The total number of different species living within a community is referred to as A. an ecological community. B. species richness. C. relative species abundance. D. keystone species.

B. species richness

Which of the following populations would be most likely to experience a J-shaped growth pattern? A. all of the animals in the San Diego Zoo B. single-celled Paramecia without a constant food supply C. a founding colony of rats on a small island with abundant resources D. a beehive infected midsummer with a deadly bacterial disease

C. a founding colony of rats on a small island with abundant resources

An individual's home is part of his A. carbon footprint. B. food footprint. C. built-up land footprint. D. goods-and-services footprint.

C. built-up land footprint

a measurement of how common one species is compared to another is A. an ecological community. B. species richness. C. relative species abundance. D. keystone species.

C. relative species abundance

The removal of a keystone species from a community usually results in A. the death of all other community members. B. the disappearance of that community. C. substantial changes in the abundance of many species. D. minor changes, if any.

C. substantial changes in the abundance of many species

A population of 100 individuals has a doubling time of 25 years. What size will this population be in 100 years? A. 100 B. 400 C. 800 D. 1,600

D. 1,600

Lynx feed on rabbits, and the growth curves for these two species fluctuate together. This relationship is an example of a(n) A. S-shaped growth curve. B. J-shaped growth curve. C. irregular fluctuation. D. cyclical fluctuation.

D. cyclical fluctuation

Increased carbon dioxide levels in the atmosphere have contributed to acidification of the oceans. This change of the water's pH due to a change in CO2 concentrations is an example of A. how global warming has affected a biotic factor in the biosphere. B. how global warming has affected an abiotic factor in the biosphere. C. how human activities have affected a biotic factor in the biosphere. D. how human activities have affected an abiotic factor in the biosphere.

D. how human activities affected an abiotic factor in the biosphere

The term population density describes the A. body size of different species. B. number of individuals per unit area. C. number of populations per unit area. D. number of species per unit area.

D. number of species per unit area