Chemical signal can signify the lymphatic, nervous and endocrine system.
Mostly endocrine, the endocrine system is the body system responsible for providing the needed hormones for the body. These hormones and body fluids contribute and catalyse the growth, disposition, sex characteristics and other potential corresponding output of these hormones.
DescriptionThe term social order can be used in two senses: In the first sense, it refers to a particular system of social structures and institutions
Biotic factors are anything in a ecosystem that is living, was living, or is going to live.
From this we can conclude that the biotic factors are remains of dead organisms and flora and fauna.
Temperature and minerals in the soil are abiotic, meaning they will never live.
7 trillion nerves in the human body. All these nerves are part of what's known as your body's nervous system.
Alleles. Alleles are the "same" genes, but provide a variation of the intended function.