Answer:
False
Explanation:
It is reckoned to be devoid of matter. Air is matter and a vacuum contains none
Answer:
Green leaves have water wich makes them hard to burn
Explanation:
Dry leaves have no relaining water in them, whick makes them very succeptible to fire, whereas the green leaves are green and therefore still have water in them. This presence of water makes them more resistant to fire.
Nucleic acids<span> are long polymers of repeating </span>subunits<span> called nucleotides. Each nucleotide is made </span>up<span> of three smaller building blocks (Figure 17): Figure 17 The structure of a nucleotide and the formation of </span>nucleic acid<span> chains.</span>
Autografts are skin grafts from the own patient, so the skin will not be recognized as a foreign substance, and there is no chance that the body will reject the cells.
Answer:
yes, gold can be created from other elements. The process requires nuclear reactions and is so expensive that currently it would cost a lot more than the price of natural gold available, therefore, unprofitable. Gold is the chemical element with 79 protons in each atomic nucleus. Every atom containing 79 protons is a gold atom, and all gold atoms behave the same chemically. In principle, gold can be created by simply assembling 79 protons, (and enough neutrons to make the nucleus stable).
