Each atom becomes different from the next by having different number combinations of these subatomic particles. The different numbers of protons electrons and neutrons determine different elements or in other words a pure substance made from a solitary kind of atom
Every element has different qualities or physical characteristics for example oxygen and gold The former is a gas that is one of many elements making up organic matter Where as the latter is solid and inert a non-reactionary element
Substances that store chemical energy are primarily fuels such as coal, wood, natural gas, petroleum and propane, as well as foods, batteries and matches. Encyclopædia Britannica defines chemical energy as energy stored in the bonds of chemical compounds that can be released during a chemical reaction.
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The answer is E because heart is circulatory and brain is part of your nervous system.
Answer would be D!
Mark brainliest
Sensory receptors is the answer I found
