Answer:
its being called a miracle because mules aren't supposed to give birth haha, they're sterile, they can't make sperm or eggs because their chromosomes don't match up well, and coz of chromosomes number.
Explanation:
for example they have 31 and horses have 32 pairs of chromosomes so they cant match with anythin
This would have to do with aerobic and anerobic respiration
Answer:
skeletal muscles control his leg movement and cardiac muscles control his heart rate
Answer:
c
Explanation:
it is older because it was buried deeper than the fossil in layer d