Answer:
If a planet is too far from its star, water freezes. If a planet is too close to its star, water evaporates. ... For cooler red dwarfs, the Habitable Zone is so close to the star that solar flares and radiation from the star would destroy life. For very hot blue stars, the Habitable Zone is further away.
Explanation:
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The differences between true experiments and quasi-experiments is that in a true experiment, participants are randomly assigned to either the treatment or the control group, whereas they are not assigned randomly in a quasi-experiment. Quasi experiments are empirical interventional study used to estimate the casual impact of an intervention on its target population without random assignment.
The answer is; A
This model hypothesizes how life started during the early conditions of the earth which were hot and filled with greenhouse gases in its atmosphere about 4 billion years ago. It is explained by the theory of spontaneous generation where organic molecules were created from inorganic molecules spurred from energy from lightning. These organic molecules filled the water bodies and chemically arranged themselves, over time, into primordial life.
Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen. This allows carbon atoms to form a tremendous variety of very large and complex molecules.
Oxygen<span>, </span>sulfur<span>, </span>nitrogen<span>, and </span>hydrogen<span>.
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