The answer is C.
It took approximately 50 million years for feathers to evolve into being able to be used for flight. It started with dinosaurs running up an incline and flapping their feathered arms to provide extra speed. To gliding short distances from a high point. To the ability to fly short distances. To the ability to fly far distances (modern birds). This process took 50 million years.
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Aldosterone increases the reabsorption of sodium ions bringing more back into the blood.
<span>This is the main mineralocorticoid hormone of the adrenal gland. The function of the aldosterone is in the homeostatic regulation of blood pressure, plasma sodium (reabsorption) and potassium levels (excretion).</span>
Answer:
A thylakoid is a sheet-like membrane-bound structure that is the site of the light-dependent photosynthesis reactions in chloroplasts and cyanobacteria. It is the site that contains the chlorophyll used to absorb light and use it for biochemical reactions.
Explanation:
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Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. ... As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased
Answer:
18. G
19. C
20. I
Explanation:
18. Because the two forces are going in an opposite direction, it equals out, resulting in no change in direction or location.
19. Scientists could use tools and determine if the high temperature is the given temperature
20. Sound causes waves to travel