Using diverse nutrient sources can help maintain soil health. Manure and compost add organic matter as well as an array of nutrients, but using just compost or manure to meet the nitrogen needs of the crop every year can result in excessive phosphorus levels in the soil.

5 0

3 years ago

How many amino acids can compose a protein molecule?

Vladimir79 [104]

The answer is A: Between 50 and 5,000 amino acids

3 0

2 years ago

Define duplet and octet??

Bogdan [553]

Answer:
duplet-A set of two things or people
Octet-A group of 8 things or people

5 0

3 years ago

Which substance can not be broken down by a

Tomtit [17]

Answer: (3) silicon

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Silicon (Si)

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: ethane $(C_2H_6)$ , propanone $(CH_3COCH_3)$ and water $(H_2O)$

7 0

3 years ago