Science 12.4 Standing Giants

1. What is a carbon sink?
A system or object that absorbs carbon-dioxide. 

2. List three functions of a forest.
1.Shelter for animals.
2.Paper,Wood.
3.it turns carbon-dioxide to oxygen.

3. Why are trees a renewable resource?
We can cut them down, but we can also regrow them.

4. What are three important chemicals extracted from wood?

1.Lignin
2.Oils 
3.cellulose

5.  What is one problem with clear-cutting? 
It makes it harder for trees to regrow.