Answer:
The answer is A. True, salts are indeed clear because there are no free electrons to interact with ambient light.
Answer:D Is the correct answer.
Explanation: All of the options could be the parents of the child with type O blood, because every type of blood has an O type in it.
Answer: The Earth
This was believed to be true for hundreds of years....
Answer:( answer for number one) an essential nutrient for the production of amino acids, proteins, nucleic acids. ( number 2 ) for the growth, maintenance, and repair of all tissues and cells, and for the production of the genetic building blocks, DNA and RNA