Cumulative Exam — Cumulative exam Answers

Fluctuations in the phosphorus cycle in aquatic ecosystems _______.a.can lead to changes in the growth rates of aquatic populationsb.are never caused by human impact on the environmentc.lead to a decrease in the amount of phosphorus found in sedimentd.never occur naturally

Which of the following adaptations is most likely not found in organisms of the savanna?a.burrowingb.grazingc.long legsd.thick fur

Which of the following is not true regarding the cacao tree?a.It originated in the Amazon.b.The cacao tree produces fruit all year long. c.Cocoa is made from the whole cacao fruit.d.The cacao fruit has a mango flavor.

Biological pest control methods supplement but cannot replace chemical pest control methods.

Koala are a specialist species because they _______. a. only eat eucalyptus leaves b. are marsupials c. live in trees d. eat leaves Please select the best answer from the choices provided

Phytoplankton would most likely be found _______.a.in the abyssal zoneb.in the pelagic zonec.in the photic zoned.in the benthic zone

A fungus on the roots of a plant helps the plant absorb nutrients it needs from the soil, while the fungus gets what it needs from the plant. What type of symbiotic relationship is this?a.Mutualismb.Commensalismc.Parasitismd.Competition

Ozone is formed when _______.a.two oxygen molecules combineb.an individual oxygen atom combines with an oxygen moleculec.ultraviolet radiation breaks apart four oxygen moleculesd.oxygen molecules are broken into separate atoms

The thickness of Earth’s crust depends upon _______.a.whether it is continental or oceanicb.the temperature of the outer corec.how volcanically active the region isd.all of the above

Which of the following pieces of equipment is directly used to make measurements? a. fume hood b. eye wash station c. bunsen burner d. balance Please select the best answer from the choices provided