In bonding of any type, the (inner or outer) level electrons are involved.

How does climate change affect producers?

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

What part of the body contains bile, an enzyme that break down lipids?