Answer:
D, think of chemical changes. When iron rusts it is chemically changed. The other answers are a change in form or a property of iron.
D - an increase in tree cover in the tundra.
It has more similarity to fossils in layer A than layer D.
Answer:
The volume will decrease.
Explanation:
Volume of gas is directly proportional to temperature. So if temperature decrease, volume will also decrease.
(Correct me if I am wrong)
