Which statement describes a situation that leads to stability within an ecosystem?
Carbon dioxide and water are released only by abiotic sources in the ecosystem.
Interactions between biotic and abiotic components regulate carbon dioxide and water levels.
Animals provide the oxygen used by plants, and plants provide the nitrogen needed by animals.
Organisms provide all the necessary energy for the maintenance of this ecosystem.
Answers: 2
Biology, 21.06.2019 19:40, Ashleyrango5371
In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20
Answers: 1
Biology, 22.06.2019 01:00, Samuelgamboe
The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote
Answers: 2
Which statement describes a situation that leads to stability within an ecosystem?
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