Chlorophyll is located in , which are found in of chloroplasts. a. stroma; photosystems
b. photosystems; thylakoids
c. stroma; thylakoids
d. thylakoids; photosystems

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.