If they have different sources of obtaining their required nutrients, food and other materials needed for survival. I believe.
The answer is definitely not D. why would the cell dicard DNA? Everything is used and reused in a cell. The correct answer is A, after the helicase comes in and splits the DNA into two it just has to add the corresponding nucleotides and there you have it: two stands of DNA both containing a old stand and a new one
As humans we can do whatever to gentically modify trees, but trees take over 100 years to grow back, to fix this, we could prevent unessecary tree cutting and plant new trees for the next generations , they're renewable because they can be replenished over a course of time
The dead and decayed plants turn to coal after a million years under high pressure and heat of the earth.
And the petroleum is formed the same but with the dead animals in ocean bed to form petroleum
If an object is more dense it will absorb so it will reflect less