we are not "made of stardust" we just are 40% stardust(an impressive amount seeing as the stardust atom is heavier than normal atoms).
Answer:
I think it's B
Explanation:
During QRS that's when the depolarization happens and when that happens the ventricles contract and push blood to the lungs and body.
Answer:
The answer is C. An increase in competition for sunlight and space among plants
Answer:
Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects
