Answer:
Calcium is a chemical element with the symbol Ca and atomic number 20.
Explanation:
Answer:
clean it up
Explanation:
cause if someone isn't looking where they're going and they trip on something then fall in the glass
Answer:. whether or not the organisms thrive in extreme conditions
Explanation: i took the class
Answer:
electromagnetic radiation refers to the waves of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy.