Charles darwin viewed the fossil record as
a) evidence that earth was a thousand years old - i know it isn't this one
b) useful support for his theory - i'm leaning towards this one
c) interesting but unrelated to the evolution of modern species
d) evidence that traits are acquired through use or disuse - i know it can't be this one either

Illustrate, label, and explain how atmospheric carbon and oxygen find there way into a consumer and then back into a producer. include the following terms in your illustration: co2, 02, respiration, photosynthesis, sugar, mitochondria, chloroplast, water, solar radiation

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs