Answer:
It can either be instinctual or learned.
Explanation:
An <em>Instinctual </em>behavior is one that a living being knows from the moment of birth, such as breathing or eating, but a <em>Learned</em> behavior is a behavior or habit acquired by personal experience, like speaking, walking, or playing video games.
Answer:
D
Explanation:
Additional classes of steroids include:
Neurosteroids such as DHEA and allopregnanolone
Aminosteroid neuromuscular blocking agents such as pancuronium bromide
Deforestation, pollution of fresh water
Abnormal tissue growth on a mucous membrane.