Answer:
The sun is the ultimate source of energy for plants and animals because it gives them energy. Plants need the sun to keep on growing, and animals need the sun for heat and light.
Explanation:
I think the correct answer from the choices listed above is option b. A permeable rock weathers easily because it <span>contains many small, connected airspaces. Its porosity is very high that it can easily be destroyed by simple means. Hope this answers the question.</span>
Answer:
Damaged DNA causes an increase in the number of mutations in the cell: this is extremely dangerous for the body and in fact this process is at the basis of the birth of cancer cells.
To avoid this, the cell is equipped with some molecular protective systems including the activation of the p53 protein. p53 induces recruitment of DNA damage repair systems and stops cell replication until the damage has been repaired. If the damage cannot be repaired p53 induces cell death through apoptosis
When this sequence is followed by altostratus the old farmers were talking about an approaching warm front. In addition, a warm front is well-defined as the changeover area where a warm air mass is substituting a cold air mass. The warm fronts usually move from southwest to northeast and the air in arrears a warm front is warmer and moister than the air ahead of it. When a warm front permits over the air turn out to be markedly warmer and more humid than it was earlier.
