predict the effects of changes in ecosystems caused by living organisms, including humans, such as the overpopulation of grazers or the building of highways
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Q 1/6
Score 0
The picture below shows a type of plant called kudzu. Kudzu is a fast-growing Asian vine that was introduced into the United States. Kudzu quickly uses available resources and can completely cover the plants in an area. What effect does the rapid growth of kudzu most likely have on an ecosystem?
60
The water supply in the area increases.
The number of other plants increases.
The variety of native plants decreases.
Weather patterns in the area change.
Q 2/6
Score 0
Prairie dogs eat plants and dig underground tunnels. Prairie dog tunnels help break up hard prairie soils, and the animals’ waste adds nutrients to the soil. In the past, large groups of prairie dogs lived in many parts of the U.S. Great Plains, but people have destroyed most of these colonies. Which of these will most likely happen when prairie dogs are removed from an area?
60
The number of underground tunnels will increase.
The population of plants that prairie dogs eat will decrease.
The nutrients in the soil will increase.
The population of predators that eat prairie dogs will decrease.
6 questions
Q.
The picture below shows a type of plant called kudzu. Kudzu is a fast-growing Asian vine that was introduced into the United States. Kudzu quickly uses available resources and can completely cover the plants in an area. What effect does the rapid growth of kudzu most likely have on an ecosystem?
1
60 sec
5.9.C: Organisms and Environments
Q.
Prairie dogs eat plants and dig underground tunnels. Prairie dog tunnels help break up hard prairie soils, and the animals’ waste adds nutrients to the soil. In the past, large groups of prairie dogs lived in many parts of the U.S. Great Plains, but people have destroyed most of these colonies. Which of these will most likely happen when prairie dogs are removed from an area?
2
60 sec
5.9.C: Organisms and Environments
Q.
Wild Texas hogs, similar to the one shown below, are descended from hogs brought here from other countries. These wild hogs eat many different kinds of foods, including plants, fungi, and insects. Besides being very destructive to the habitats of other animals, how do wild hogs most likely harm other animals?
3
60 sec
5.9.C: Organisms and Environments
Q.
The nesting habits of four types of birds are described in the table below. If all the dead branches and dying trees in a wooded area are removed, which bird’s nesting habit would be most affected?
4
60 sec
5.9.C: Organisms and Environments
Q.
Data for four animal populations in a wooded area were collected before and after a shopping mall was constructed near the area. The graph shows changes in the populations. Which animal’s food sources most likely increased after the mall opened?
5
60 sec
5.9.C: Organisms and Environments
Q.
Fertilizers used on farms near the coast can be carried to the ocean when runoff occurs during rain showers. These fertilizers can decrease the populations of fish and shellfish. Which other populations most likely decrease as a result?
