Available options:
a). fossil fuels
b). kinetic energy
c). Pesticides
d). sensory neurons
e). cholesterol
f). layers of fat
g). acetic acid
h). bioaerosols
Given those answer options, answer the question: Fact 1: Steroid hormones are made of lipids, such as phospholipids and cholesterol. Fact 2: Steroids Steroids are lipids and, more specifically, derivatives of cholesterol. Given the two facts above, steroids are derivatives of what?
A:
e).