The main producers in aquatic environments are _______.
Savanna is considered a transitional biome because it is intermediate between two _______.
A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is not a possible cause for the growth?
Which of the following is an example of a behavioral adaptation?
Scientists use specific levels of organization to analyze the biosphere. Which level of organization is seen in both a school of anchovies and a gaggle of geese?
Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley?
In a trophic pyramid, which of the following populations would be found in the trophic level directly above the producers?
The community is the lowest level of the biosphere’s organizational hierarchy to include members of different species.
Arrange the events of succession after a volcano erupted in their proper order.
Which of the following would be considered a limited resource in the lower depths of the ocean?
Which is not an advantage of using the Pyramid of Energy?
Which of the following is not a freshwater ecosystem?
Which class of organisms gather their energy directly from the sun?
Which organism gathers its energy directly from the sun?
Freshwater ecosystems can be found within terrestrial ecosystems.
Which shows the correct order of increasing trophic level, from producer to tertiary consumer?
Which of the following is an example of a biochemical adaptation?
Which of the following factors might be affected by a wildfire?
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