C. Shortages are temporary while scarcity always exists because there will always be a greater need for limited resources.
Hey!
Physics is the study of matter and energy and how they react.
Is that what you were looking for?
In any good web, which organisms has the LEAST available energy?
D) animals or carnivores
A chemical change has occurred because the wood has turned into a substance that can't be changed back to it's original form. The wood has turned to ash, chemical changes are non reversible.