Answer:
Bases
NaCl
Acids
Explanation:
because compound consist of many atoms joined together.
Answer:
Energy in an ecosystem comes from the Sun.
Explanation:
It is a major source of energy for organisms, plants and the whole ecosystem basically.
False
A heliocentric is when the model is
representing the sun as the center
A geocentric says the earth is at the center of the universe
Answer: hydrogen
Explanation: hydrogen gas is a major component of water which occupies a large portion of the Earth's atmosphere
Period are going left to right across the periodic table
Groups are going up to down on the periodic table
