By what process do clouds form in the atmosphere?

Which of the following statements about groundwater is true?

By what process is the carbon in fossil fuels released into the atmosphere?

Which of the following sources of carbon takes the shortest time to form?

Acid rain form when air pollution combines with moisture in the atmosphere and falls to Earth as precipitation that has a low pH. Which of the following effects cannot be attributed to acid rain?

Forest fires can burn down all of the trees and plants living in an area. However, new growth can spring from the decaying organic matter left behind. What is the gradual, sequential regrowth of a community of species after a forest fire?

A biologist compares how different ecosystems undergo succession. Which feature might be used to distinguish secondary succession from primary succession?

A nursery owner wants Easter lillies to bloom in the spring and poinsettias to bloom during the December holidays. Which plant response would the owner manipulate to make sure each plant bloomed for the appropriate season?

Researchers have found that a local squirrel population fluctuates from year to year, increasing one year and decreasing the next. Which of the following factors would cause the squirrel population to grow?

All populations fluctuate in size. Which of the following is a non environmental factor that might cause a population to be reduced in size?

Which is a way in which the Central Arizona Project, which diverts water from the Colorado River, could have contributed to population growth in southern Arizona?

The population size that an environment can sustain is called the carrying capacity. Which of the following factors would not decrease the carrying capacity of a pond environment?

Imagine that a city located in a desert environment has grown significantly over the last few decades. Which statement best describes how the growth of the metropolitan city would impact the desert environment in the area?

Imagine that a nonnative bird species appears in an ecosystem. Which of the following will not be a likely change in the ecosystem?

The Yellowstone area contains organisms representing all trophic levels, including plants, algae, moss, fungi, blue jays, fish and grizzly bears. Which sequence best represents the transfer of energy through Yellowstone trophic levels?

Kerry drew the following food chain in her science notebook. Plants to grasshoppers to rats to owls. How would the grasshoppers be classified in this food chain?

Very rarely do ecosystems contain more than four trophic levels, because there is not enough energy to support more. In which trophic level is there the least energy available?

When supplies of a product decrease, the price of the product tends to increase. How might continuing increases in the price of fossil fules affect research on the development of renewable resources, such as wind power and solar energy?

Conservation is the wise use of natural resources. One way to practice conservation is the three Rs-reduce, reuse, recycle. When people practice conservation in these ways, how do they affect the environment?

When developing environmental policies, elected officials and environmental activists often consult scientists to assess problems and verify the results of solutions. Which actions are part of environmental science as well as environmental activism?

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