If a scientist is observing biotic and abiotic factors, which of the following level of organism must she be studying?

a. an individual organism
b. a community
c. a population
d. an ecosystem

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Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

How did the club fungi get its name? a. it is named for the club-shaped seeds it produces. b. it is named for the way individual species grow together in small groups called “clubs.” c. it is named for the club-shaped area where it produces spores. d. it is named for the club-like mechanism it uses to kill its prey.