Answer:
the answer is 'rectilinear propogation of light'
Explanation:
The process is respiration as many organisms store energy
The amswer on which us population is currently exp. a mental disorder id D. 35 %
A compound is always a substance because it's made out of two or more atoms bonded together. Now a substance isn't always a compound because it takes two or more elements to create a compound in a chemical reaction, ans substances can contain only one element. In other words a substance can be constructed of one type of atom. Some substances that aren't compounds are: gold and baking soda.
