The “3 R's” are a mantra for the environmentally friendly restaurant manager. By reducing waste, reusing containers, and recycling materials, your business can make huge strides when it comes to sustainability. ...
Answer: water, wind, volcanic rock, sand, and other stuff that can pile up basically.
Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?
Answer:
A, the populations of producers and decomposers should be stable
Explanation:
The other three do not fit, only reasonable one is A