Answer:
OPTION B..
Explanation:
A major environmental concern related to nuclear power is the creation of radioactive wastes such as uranium mill tailings, spent (used) reactor fuel, and other radioactive wastes. These materials can remain radioactive and dangerous to human health for thousands of years..
Answer:
B. hydrogen
Explanation:
that's because hydrogen is an element.
Answer: D
Explanation:
The mitochondria is the power house of the cell, remember power as energy
If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.
It is called the nitrogen cycle- nitrogen gas gets transformed into nitrates through nitrogen fixation.
