Answer:
fertilizers
Explanation:
Plants use nitrates as a supply of nitrogen, which is needed to make proteins for healthy growth. Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces.
Answer:
B
Explanation:
negative feedback is used to regulate feedback
66% of new HIV infections occur in sub-saharan Africa.
Electric field , and if that’s wrong it should be electric force . Those are the only two that make sense
