What are hormones made from cholesterol called?

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred