Biological classifications have changed over the years. what is probably not a reason for these changes?

a. scientists change the names of taxonomic groups to match current nomenclature.

b. scientists learn more about the genetic sequences of organisms, and thus how they are related.

c. scientists learn more about the evolutionary histories of organisms through the fossil record.

d. new species are discovered that challenge old classifications.

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

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