<h2>Answer:</h2>
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
- Active repressor , Active activator
- Active repressor, Inactive activator
- Inactive repressor, Active activator
- Inactive repressor, Inactive activator
Structural adaptations<span> are physical features of an </span>organism<span> like the bill on a bird or the fur on a bear. Other </span>adaptations<span> are behavioral. Behavioral </span>adaptations<span> are the things </span>organisms do<span> to </span>survive. For example, bird calls and migration are behavioraladaptations<span>.</span>
Answer: Metric System
Explanation: The metric system is a more logical way of explaining measurements because it uses base ten to go up or down in the scale of measurement. This makes it more efficient and reasonable, on top of being easier to learn.
So you don’t tear any tissue and so they get more elastic.
Answer:
Senior mothers are also under pressure to share food with their sons, so that they're able to reproduce as well. It also makes sense for these mothers to assist their sons because as the mothers grow older, they are increasingly related to whales in other, neighboring pods via their sons' calves.
