Suppose an ecosystem suddenly loses all of its consumers to a disease. Which of the following scenarios would most likely happen? A} Carnivores and omnivores would starve to death.
B} Energy would no longer enter the ecosystem.
C} The ecosystem would become overgrown with plants.
D} Plant-eating organisms would become abundant.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution