So the question is asking on which of the following choices are the reason why the Indus Valley civilization decline and base on my research, I would say that the answers would be A. The surrounding land was severely deforested , C. Irrigation made the soil salty and unfit for farming and D. <span>Disease reduced the population. I hope this would help </span>
Explanation:
B State whether the following statements are true or false.
1. Yeast respires aerobically.
2. Plants do not respire at all.
3. Earthworm respires through their moist skin.
4. Insects respire through gill.
5. Respiration releases energy for various metabolic activities.
6. Respiration is a process involved in breathing.
7. Tracheae are connected to tube like structures called spiracles?
In Egypt, the Nile River creates a fertile, green valley across the desert. It was on the banks of the river that one of the oldest civilizations in the world began. The ancient Egyptians lived and farmed along the Nile, using the soil to produce food for themselves and their animals.