Human
Baseline mankind
Basic Information
Anatomy
Baseline humans have not changed significantly since before the Biocrash. Closely related to apes, humans are upright bipedal mammals with two legs and two arms, hair on their heads and bodies and endothermic metabolisms.
They have carbon-based biochemistry. Humans depend on water as a solvent and oxygen for respiration. Despite being composed mostly of water, humans are incredibly resilient against temperature changes--the human body has extensive measures for maintaining homeostasis.
Growth Rate & Stages
On average, humans begin adolescence at 10-13 years of age and begin senescence at 65-70 years of age. Life spans vary from civilization to civilization, but most humans in the galaxy live to be at least 80 years old.
Ecology and Habitats
While humans can adapt to a surprising range of environmental conditions, on average they thrive in temperate-to-warm climates and they prefer gravity levels and atmospheric densities similar to those of Terra. Humans can only survive in oxidizing atmospheres, preferring a composition of three parts nitrogen to one part oxygen.
On old Earth, humans inhabited almost every latitude and elevation of the planet. The human body's capacity to regulate its internal conditions means that humans can grow to tolerate all but the most inhospitable environments.
Dietary Needs and Habits
All humans are omnivores, capable of digesting meat and vegetable matter (but not cellulose). Their dentition is adapted to this diet. Depending on what food sources are available, humans can survive chiefly on meat or chiefly on plants if necessary.
Additional Information
Perception and Sensory Capabilities
Humans have forward-facing eyes which give them excellent binocular color vision in daylight, acute tactile sensation in their hands, good senses of smell and hearing, and the ability to differentiate many tastes. Organs in their ears allow humans to maintain their upright balance without the assistance of appendages such as a tail, and they have an intuitive sense of proprioception.
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