Trees are a renewable resource that when managed properly can ______ our needs indefinitely.
举一反三
- Can our __________ meet the needs of our population growth?
- When the ____system does not function properly, a number of diseases can occur.
- Our energy needs will have to be fulfilled from ( ) A: depletable energy sources B: renewable energy sources C: the existing energy D: recycling energy
- We can cut down global warming pollution by increasing our reliance on renewable energy source such as______.
- Our university department needs some IT training. Can you help?