Which ecological principle is best illustrated by
the diagram below?
(1) In an ecosystem, material is cycled among
the organisms and the environment.
(2) In an ecosystem, the number of producers
and consumers is equal.
(3) Competition within a species results in
natural selection.
(4) An ecosystem requires a constant source of
energy.
Answers: 1
Biology, 22.06.2019 02:20
Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?
Answers: 3
Biology, 22.06.2019 05:30
Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.
Answers: 2
Biology, 22.06.2019 12:30
The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is
Answers: 1
Biology, 22.06.2019 13:00
Sickle cell amelia is a condition condition where the red blood cells are deformed which is affected by sickle cell amenia
Answers: 1
Which ecological principle is best illustrated by
the diagram below?
(1) In an ecosystem, mat...
(1) In an ecosystem, mat...
Mathematics, 07.04.2020 18:41
History, 07.04.2020 18:42
Mathematics, 07.04.2020 18:42
Biology, 07.04.2020 18:42
History, 07.04.2020 18:42