a person or animal that shows no symptoms of a disease but carries the substance used in treating or alleviating the symptoms of a disease or injury
Answer:
a substance that takes part in and undergoes change during a reaction.
Explanation:
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Answer:
b. can consist of manure, crop residues, or bone meal is the correct answer.
Explanation:
Organic fertilizers are derived from the plant-based material and animal excreta, vegetable matter, animal matter, crop residues, and human excreta.
Examples of organic fertilizers are:
Organic fertilizers provide essential nutrients in the soil, improves the structures of soil, decrease the soil erosion caused by rain by increasing and improving the soil's capacity to hold the nutrients and water.
Nitrogen fixation is the conversion of nitrogen gas into a usable form.
C.photosynthesis hope that helps
