They are beneficial because humans not only live but also perform all economic activities on land.
Answer:
H2O and O2
Explanation:
water and oxygen is required for photosynthesis
Answer:
Universe
Explanation:
This should go to physics category
The big bang theory is derived from the observed universe, and the microwave background signal that arrived to earth...
B. 2.883 million kilometer
The answer is b, for he is comparing the two rocks to find an age relative to the other
