Answer:
The oxygen revolution happened about 2.5 billion years ago. ... Then oxygen started to accumulate in the atmosphere. Oxygen is toxic to anaerobic organisms and this increase in atmospheric oxygen killed much of the life that had evolved to this point generating a huge mass extinction.
Explanation:
Four daughter cells are produced.
Answer: The Independent Variable
Explanation:
A good way to remember is the I in Independent. <em>I can change this, I control this</em>
(Ex. Different rose bushes are grown in a greenhouse for 2 months. The number of roses on each bush is recorded at the end of the experiment.
- Independent Variable - Type of roses
- Dependent Variable - # of flowers
- Controlled Variable - Most natural/common rose bush)
Answer:
1 box might be offsprings
2 box might be eggs
3 box might be but or seed
Answer:
1347 to 1351, the number of deaths due to Plague
Explanation:
