Biology, 18.10.2020 09:01, alexam2007
What is commensalism? Give two examples.
How does predation affect an ecosystem?
How does competition affect an ecosystem?
Explain in your own words how competition works in an ecosystem.
How did the backyard bird feeders in the article increase competition in that ecosystem?
Answers: 3
Biology, 22.06.2019 13:20, abolton04
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 22.06.2019 16:00, postorivofarms
Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal
Answers: 3
Biology, 22.06.2019 22:30, dominiqueallen23
Skulls of homo sapiens were found during an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are ( 1 ) fossils. ( 1 ) a. mineralized b. mold c. original-tissue
Answers: 1
What is commensalism? Give two examples.
How does predation affect an ecosystem?
How does co...
How does co...
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