The <span>amount of food, habitat, water, and other necessities available in the </span>environment<span>.</span>
Answer:
Epinephrine, also known as Adrenaline
Explanation:
Adrenaline impacts short-term mood and can take seconds to flood your system.
*it may also be cortisol, I'm not sure if there's more context. Cortisol takes longer to work and can have long-term effects.
Mostly, it would be social scientists however, some biologist could also explain these behavioral characteristics and temperaments like geneticists and cognitive scientists.
Variables and factors like the biological, environmental and evolutionary component of how a trait is unearth by these experts.
<span>They are reactions that complement each other in the environment.</span>
Assuming you mean living matter
All living matter is produced by other living matter