Which is an external environmental factor that affects heredity? gender structural differences nutrition hormones

The correct answer is nutrition.

The Genetic and environmental factors is where all traits depend on. This means that the process genes interacts depends in the environment in which they live in or where they get their nutrition to live.

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what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.