If the earth’s crust contained twice as much iron as it does, would atmospheric oxygen buildup have been slowed down or sped up during the past 2.5 billion years?
what would the consequence of this have been for the evolution of aerobic respiration, the ozone layer, green plants, and animals?
Answers: 3
Physics, 21.06.2019 22:30, tvrgrvJfbhh3881
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 03:00, emilypzamora11
If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?
Answers: 2
Physics, 22.06.2019 05:00, emj617
In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.
Answers: 1
If the earth’s crust contained twice as much iron as it does, would atmospheric oxygen buildup have...
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