15. satellites remain in orbit around earth because
a. the moon's gravitational pull on them is equal
to earth's pull.
b. no forces act on them.
c. their motors keep them moving in circles.
d. the curve of their paths as they fall matches
the curve of earth.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

The answer is going to be a because ik that i’m right

Ibelieve the answer is c.