Answer: The main organ of the integumentary system is the skin.
Explanation: The skin regulates body temperature, keeps germs from entering your body, and produces vitamin D to help absorb calcium.
Answer:
The article is not reflecting current knowledge.
Explanation:
Rick Potts had explained some thing which has already been established and published several years back by various scientist, researchers, biologist, ecologists and geologist.
Re publishing something again will not bring laurel to Pott, instead his article would not be considered a suitable article for reference.
Also , if Pott would have published any thing that talks of a way ahead of those previous publication, even then his article could be referred.
Answer:varied in size
Explanation:Galaxies vary in appearance. Galaxies differ greatly in size. Some contain as few as a hundred million stars, but the biggest have more than a trillion stars. Galaxies also vary in shape.
Solar energy.
This is because the solar energy arrives and is trapped as radiation and heat.
The total amount of water in the planet
