I would say DNA needs to be in a double helix so it can be unraveled and duplicated during cell mitosis
Answer:
Trees share water and nutrients through the networks, and also use them to communicate. They send distress signals about drought and disease, for example, or insect attacks, and other trees alter their behavior when they receive these messages.
Answer:
Low concentration to high concentration
Explanation:
If moving up the concentration gradient, you will start detecting the chemical molecules more and more frequently.