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The answer you are looking for is....
"Independent variable is the one you measure and the Dependent Variable is the one you chose to change."
Explanation:
An Independent variable (often denoted by x ) whose variation or value does not depend on that of another.
A dependent variable (often denoted by y ) whose value depends on that of another.
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3 nitrogenous bases code a single amino acid.
If the natural habitats were destroyed,the more animals/plants will going to be fewer/lesser in that particular area.
The Trachea
is your answer
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Answer;
A. the Sun's rays are nearly perpendicular to Earth's surface.
Explanation;
-Tropical region receives more solar radiation not only because the Sun’s rays hit the region more directly, but also because they travel through less of the atmosphere to get there.
-Some radiation is absorbed as it travels through the atmosphere, so less energy is lost in tropical regions.