Answer:
In the center of the stream well above the bottom of the bed or channel but below the surface.
Answer:
The first yellow fever outbreaks in the United States occurred in late 1690s. Nearly 100 years later, in the late summer of 1793, refugees from a yellow fever epidemic in the Caribbean fled to Philadelphia. Within weeks, people throughout the city were experiencing symptoms.
Answer:
D- all. .
Explanation:
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Answer:
The four difference between chemical fertilizers and organic fertilizers are following :•
- chemical fertilizers prepared in industries whereas organic fertilizers prepared in field
- chemical fertilizer does not provide humus to the soil whereas organic fertilizers provide humus to the soil
- in chemical fertilizer , these are chemical that are added to the soil to increase its fertility and productivity. whereas in organic fertilizers, These are obtained from dead and decaying plants and animals.
- Rich in plant nutrients whereas Less rich in plant nutrients