Middle School science


1. Which of the following is NOT one of the major interactions between organisms in an ecosystem?a.submissionc.competitionb.symbiosisd.predationPlease select the best answer from the choices providedABCD2. Which of the following factors does NOT limit population growth?a.speciesc.spaceb.carrying capacityd.food3. Which disturbance would result in primary succession?harvesting wheat by using a combine harvester at the end of the growing seasoncontrolled burning to stimulate the growth of forest trees such as sequoiathe formation of Surtsey, a volcanic island off of the southern coast of Icelandthe effect of a large herd of elephants on the grasses and shrubs in an area4. If you count 20 beetles in a garden measuring 5 square meters, the population density of the beetles isa.100 beetles per square meter.b.20 beetles per square meter.c.5 beetles per square meter.d.4 beetles per square mete5. Mutualism, commensalism, and parasitism are the three types ofa.symbiotic relationships.b.predation.c.competition.d.prey adaptations.

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