Answer:
The water would erode it breaking bits off and carrying them away
B. 2.883 million kilometer
I only have an answer for number 24, I'm sorry! But one piece of evidence is the DNA sequences, they have discovered that humans and monkeys/apes share a common ancestor through DNA. Another would be fossils, scientists have fossils to show great similarities in the skull and jaw structure, along with the legs, comparing to humans.
The motor neuron and muscle fiber intersect at what is called. the neuromuscular junction.