Answer:
The Earth receives about 71% of the suns radiation. About 29% of that radiation is actually reflected back into space.
Explanation:
Hope this helps:)
It's controversial because the best source of stem cells is a human embryo (an aborted fetus).
Answer:
those best suited to demands of environment survive
Explanation:
The most common and fastest way of measuring ocean depth uses sound. Ships using technology called sonar, which stands for sound navigation and ranging, can map the topography of the ocean floor. The device sends sound waves to the bottom of the ocean and measures how long it takes for an echo to return.
