Plants in the desert _______.a.effectively conserve and retain water b.have high levels of transpirationc.release 50-80% of water back into the ecosystemd.make their own precipitation
What effect do abiotic cycles have on ecosystems?
Explain how fluctuations in abiotic cycles can influence populations.
Hibernation is _______.a.an example of an abiotic cycleb.triggered by changes in the weatherc.caused only by biotic factorsd.triggered by breeding patterns
What is a possible consequence of fertilizer runoff in aquatic ecosystems?
Which of the following is not a way in which carbon gases are introduced into the atmosphere? a. forest fires b. respiration c. photosynthesis d. burning of fossil fuels Please select the best answer from the choices provided
How do the plants in a rainforest contribute to the water cycle?
Which of the following statements about the phosphorus cycle is true?a.In living organisms, phosphorus can be found in nucleic acids.b.Phosphorus in aquatic ecosystems is only found in sediment.c.Elevated levels of phosphorus in aquatic ecosystems is always beneficial. d.The soil plays no part in the phosphorus cycle.
Explain the role of organisms in the carbon cycle.
In the carbon cycle, carbon is found in _______.a.the atmosphereb.the soilc.living organismsd.all of the above
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