Answer:
<em>The push of the first object on the 2nd object. friction.</em>
It's mixture.
Take salt water for example. The salt is mixed, or dissolved, in the water. To get the salt by itself, you could evaporate the water by boiling the mixture
“it breaks down food to release energy” is the correct answer, Number 2
Answer: Both infect host organisms
Explanation: A virus is a microscopic particle that can infect the cells of a biological organism. ... They are similar to obligate intracellular parasites as they lack the means for self-reproduction outside a host cell, but unlike parasites, viruses are generally not considered to be true living organisms.