MMW Intro EBio

If a car emits 2.3 kg of CO₂ per liter of gasoline and drives 50 km consuming 5 liters, how much CO₂ (in kg)is released?

If one tree produces enough oxygen for two people per day, how many trees are needed to support the class?

If a family wastes 1 kg of food each week, and it takes 2,500 liters of water to produce 1 kg of food, how much water does this family indirectly waste in a year?

A plastic bottle takes 450 years to decompose. If a city throws away 2 million plastic bottles every day, how many plastic bottles will still exist in landfills after 10 years, assuming none are recycled or decompose?

Replacing one traditional 60W bulb with an LED bulb saves about 50W of power. If the bulb is used for 5 hours daily, how much energy (in kWh) is saved in a month (30 days)?