Answer:
by wearing of rocks
Explanation:
earths gravity your welcome
Answer:
electrical power. nnnnnnn
An open system is
when there is a transfer of energy and matter with its surroundings.
A closed system is
where there is a transfer of energy, may it be heat or work, but not matter
with its surroundings.
An isolated system
is where there is no transfer of energy or matter with its surroundings.
(I didn't have this as a question on any of my quizzes, but I will try my best. I wish you luck!)
Answer: Proteins
This is a <u>peptide bond</u>, which is a bond that forms between two <u>amino acids</u> through a condensation reaction. Amino acids make <u>proteins</u>.