Pioneer species are the first organisms to live in an uninhabited area.
Answer:
I know you only need two, but here:
--Subsidence and sinkholes.
--Sinkholes and caverns.
--Waterfalls and rapids.
--Deltas and levees.
--Erosion and abrasion.
Explanation:
adenine (A) pairs with uracil (U); guanine (G) pairs with cytosine (C).
A and B are the exact same option.
The answer is that the production of ethanol indicates anaerobic respiration.
Answer:
The yam was the cornerstone of Mongol administration and allowed the Great Khan to run one of the largest empires in history.
Explanation: