Answer:
amino acids
Explanation:
(if you are confused, I recommend watching the videos from Khan Academy and The Amoeba Sisters.)
My thought on it is...soil erosion is when the top layer of the earth is somehow washed away by something..blah blah..lol..it could result in the land being a desert, and you can't plant crops cos the land doesn't have the nutrients.. you can reduce it by having a land cover like grass..
sorry my explanation sucks..
Answer:
Soil is a major source of nutrients needed by plants for growth
Answer:
The pulmonary veins carry deoxygenated blood away from the body and into the heart
Explanation:
Answer:
hopefully its a. compound
Explanation: