The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.
B) Its territory was too vast to defend
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1. Filter The Salt Water
2. Get Water Imported From Other Countries
3. Filter Sewage Water
4. Drinking Other Edible Liquids
5. Replication Of Water Molecules
Answer: Since the base of a cylinder is a circle, we substitute 2πr for p and πr2 for B where r is the radius of the base of the cylinder.
Explanation:
