Answer:
C only between nonmetals
Explanation:
Nonmetals form covalent bonds by sharing electrons. In the human body, most bonds are covalent, and the body is made up mostly of carbon, hydrogen, oxygen, you get the idea... which are all nonmetals!
Why not A: Noble gases don’t bond, except in rare cases.
Why not B: Metal-nonmetal bonding is called an ionic bond, because electrons are transferred between ions.
Why not D: Metals usually don’t bond to each other, and this isn’t covalent because they don’t share electrons.
Answer:
b. Photosynthesis
Explanation:
Photosynthesis is the process by which producers make their own food from raw materials: carbon dioxide and water in the presence of sunlight.
Answer:
A lens tissue with distilled water (only after removing the loose dust, or else it will scratch the lens), after that lens use lens cleaning fluid/optical cleaning solution or absolute ethanol + lens tissue to remove oily dirt.
(MORE CLEANING DETAILS ARE NECESSARY AND WOULD TAKE AN ESSAY TO EXPLAIN)
