I need help with these. Can someone explain why the following answers coresspond with each question and why?
![Neutral Face](https://biology-forums.com/Smileys/default/1f610.png)
I need the points!!!!!!
14) Following clear cutting of a broadleaf forest several hundred years ago, the land was colonized by herbaceous species that were placed largely over time by shrubs, then by forest trees. Assuming the growth of the shrubs and trees are enhanced by the soil holding properties of the herbaceous plants, which of the following processes best describes the progression from herbaceous plants to forest trees.
Right answer: secondary succession ; facilitation
15) There are more species in tropical areas than in places further from the equator. This probably a result of
Right answer: a longer growing season
16) What is the fundamental difference between matter and energy?
Right answer: Matter is cycled through ecosystems , energy is not
17) Which of the following terms encompasses all of the others?
Right answer: heterotrophy
18) How does phosphorous normally enter the atmosphere?
Right answer: it does not enter the atmosphere biologically significant amounts