What happens is the rearrangement of particles of the gold in a physical change
False because the pumpkin could have been mixed with a different kind of pumpkin which may have affected the color.
Answer:
Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water. Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium. It is also used as an alloying agent for aluminium, beryllium, copper, lead and magnesium alloys. Calcium is essential to all living things, particularly for the growth of healthy teeth and bones. Calcium phosphate is the main component of bone. The average human contains about 1 kilogram of calcium.
Explanation:
Answer:
c. an increase in the duration of the wild fire season
