The heliocentric system gained support when Galileo observed that Group of answer choices Venus goes through phases similar to those of Earth’s moon. the orbit of each planet is an ellipse. most of the smaller planets are closer to the sun. one side of the moon always faces Earth.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

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.