Constiutuent of air
Specify the constitution of the air before the life of originon the earth?
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The constituent of earth’s atmosphere was basically include:
a) Methane, b) Ammonia c) Hydrogen, and d) Water vapor.
Write the basic difference between cell wall and plasma membrane?
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Why is the carbon-dioxide concentration a restrictive factor of the photosynthesis method? Whenever the carbon-dioxide concentration is raised indefinitely is photosynthesis as well raised indefinitely?
Suppose a scientist is testing the hypothesis which vertebrates evolved from echinoderms. Having a research object a lately found protochordate species, what is an illustration of a discovery which would weaken the hypothesis? What is an illustration
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