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.
Secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)
Because the plants are blooming to early and they can freeze
Because if you don’t you may die or get seriously hurt. Or just the investigation will go wrong and get unclear or wrong answers