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Total consumption = 4 × 10 = 40 tons.
An environmental scientist calculates the volume of a polluted lake. If the lake is 2 km long, 500 m wide, and 10 m deep, what is the volume in cubic meters?
Volume = 2000 × 500 × 10 = 10,000,000 m³.
#### 10000000
An archaeologist analyzes pottery shards. If 30% of 200 shards are from a specific culture, how many shards are non-conforming?
Non-conforming = 200 × (1 - 0.30) = 140 shards.
A marine biologist tracks a humpback whale’s energy expenditure. If it swims 10 km/h for 5 hours, burning 500 kcal/hour, how many kcal are burned?
Total energy = 500 × 5 = 2500 kcal.
An environmental scientist assesses a forest’s CO₂ absorption. If 1 hectare absorbs 10 tons/year, how much is absorbed by 50 hectares in 2 years?
Total absorption = 10 × 50 × 2 = 1000 tons.