There all different chemicals and have different reactions to different things
The correct answer is the first option. Each level of energy transfer in an ecosystem or food chain is called a trophic level. It comprises organisms that share the same function in the food chain in relation to the primary sources of energy.
Answer:
In First compound the longest chain contains 7 C atoms.
In the Second compound the longest chain contains 9 C atoms.
In the Third compound the longest chin contains 7C atoms.
Explanation:
Atomic number (19) measures how many protons it has
mass number (39.098) average of all the isotopes for potassium. as well as the number of protons + neutrons