Answer:
Craters resulted when meteoroids crashed into the surface of the moon.
Explanation:
Agree because we need to look ahead into the future. We may have a normal life with not much negative effects but the future generations to come will. Plants will die causing animals to die with them. Good will become scarce and oxygen in the atmosphere will decrease.
Because it is heavier air :)
The 3 checkpoints include G1 where the cell growth is checked, G2 where the integrity of the DNA/chromosome is checked, and M where the integrity of the metaphase plate is checked.
<h3>Cell cycle checkpoints</h3>
There are 3 regulatory checkpoints in the life cycle of cells:
- G1: the size of the cell, the presence of growth factors, and the integrity of the DNA are checked before the cell irreversibly commits to division.
- G2: the integrity of the DNA and the correctness of the replication process at the S-phase are checked.
- M: correct attachment of the spindle fibers to the chromosomes at the metaphase plate is checked.
More on cell cycle checkpoints can be found here: brainly.com/question/2128300
