Answer:
so that the genetic variations are not directly exact
Explanation:
Answer:
The answer is option B
Explanation:
In a parasitic relationship, it involves two different organisms of different species.
Mostly one of the organisms that's the parasite mostly benefits by feeding on its host and releasing toxic substances causing harmful effects on the organism.
So from the question the correct answer is the second option
Hope this helps you
Answer/Explanation:
Normal cell division is a very controlled process.
There are several checkpoints where the cell ensures the cell is:
- receiving the correct signals to divide
- that the environmental conditions are favourable for the cell to divide
- that there is no damage to the DNA.
However, cancerous cells proliferate uncontrollably. This is because they can bypass the checkpoints and divide without the necessary signals. This means cell division keeps occurring even when conditions are unfavourable and the DNA is damaged.
Answer:
Climate change?
Explanation:
A massive extinction event that took place 200 million years ago may have been caused by climate change, new research suggests. The findings shed new light on the pace of mass extinction, and imply that relatively small changes in atmospheric carbon dioxide levels may be enough to trigger an extinction event.
