This is because elements are pure substances with only one atom. When two or more elements are combined, you get compound elements; which allows for more substances to be created.
Heat and light (campfire), chemical ( beans as food), and kinetic (you hiking).
Answer:
B. How soon the organism is able to reproduce.
We can tell from their structure that fatty acids are a good source of energy because of their large number of carbon-hydrogen and carbon-carbon bonds that they contain. Most fatty acids have straight chain compounds with an even number of carbon.
There is a backup system that your body uses to create ATP, and it is called Anaerobic Respiration.
