Answer:
D
Explanation:
To maintain homeostasis. If they did not remove wastes, there would be a buildup of wastes inside the cell, which is not maintains homeostasis.
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Answer:
B. preservation of advantageous genetic mutations
Explanation:
The process of natural selection involves the preservation of advantageous genetic mutation in a given population.
Natural selection is one of the key factors that ensures the evolution of organisms.
- Desired traits that are able to survive adverse conditions like disease, food shortage, natural disasters are favored by the process of natural selection.
- Traits that also undergo advantageous genetic mutation in order to get a competitive advantage is also accrued to natural selection.
Answer:
2) liquids only
Explanation:
Hydrosphere is a total amount of water on the planet Earth. It includes water on the surface of earth,underground and in the air. A hydrosphere of a planet may be liquid,ice or vapor.
Earth's surface water is available in the form of lakes,rivers and oceans,It also exists in underground as wells,and aquifers.In the air water vapor exists in the form of clouds and fog.
The answer is “it is the gap between neurons” and “it ensures that information travels in one direction only.”
The correct answer to this question is this one: they lacked oxygen. The earliest organisms were completely heterotrophic in nature because of the reason that they lacked oxygen. <span>A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. </span>
