Hello!
The answer you were looking for is....
(D) Nonpoint source pollution is difficult to regulate, because its source is difficult to track.
Answer:
The cel theory is important because it affects nearly every aspect of biology, from our understanding of life, death, to how we manage diseases and more.
Explanation:
I majored in Biology
I think the answer to your question is q
A
It's basically a wave that moves back and forth at regular speed through matter. because of that it transfers energy through a medium (matter). however the movement of the wave is limited because of this but it can still move over long distances. so because of this these types of waves don't move far from their original point or Equilibrium position. in short think of throwing a pebble into water and seeing the little ripples from it, that's a mechanical wave.
A Personal Issue is an issue that is then of an individual or also in a relationship causing then a potential conflict or concern. If this will not be resolve or if nothing will be done then it can lead to a big problem then.
