Answer:
1. A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; core of star collapses
2. black hole; gravitational pull
3. The center of the Milky Way
Explanation:
Reactants of photosynthesis include light energy, H2O, and CO2. So I would imagine it’s H2O and CO2
The effect of geographic isolation is that the two populations are subjected to different selection (pressures) and geographic conditions. The conditions in the two areas, if different, will produce different alleles in that species and will be selected for, where genetic differences will gradually accumulate between the two different populations.
In time, enough genetic differences will occur so that the two populations will no longer interbreed. Then, by definition, they have become different species.
It is pH. If you have a pH of 0-6 it is a acidic. If you have a pH of 7 it is neutral. If you have a pH of 8 or above it is a base.
Answer:
"The Skeletal system has three very important jobs: Support, protection, and movement. Just think, if we did not have a skeletal system for support we would be just like a blob of Jell-O. The bones also protect many organs, and also the brain."
Explanation: