Answer:
answer is 2 I think I'm correct sorry if I'm not
Explanation:
reaction A is exothermic reaction as a substance is produced from two substances
and
reaction B is endothermic as two substances are formed from one complex structure
In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.
So your answer would be
C) Models help scientists visualize things they can’t see.
Answer:
Healthy ecosystems have an energy source which comes from the sun
-hope this helps! :)
Explanation:
