Biosphere 2: Agriculture and Challenges

The video explores the concept of living in a closed biosphere, highlighting the challenges and lessons learned from the Biosphere 2 experiment. It discusses the complexity of Earth's biosphere, the need for a balanced ecosystem, and the potential for future closed biospheres in space exploration.

What is the extent of Earth's biosphere?

• 20 kilometers

• 30 kilometers

• 40 kilometers

• 10 kilometers

What was the name of the research facility used in the 1991 closed biosphere experiment?

• Biosphere 1

• Biosphere 2

• Biosphere 4

• Biosphere 3

What was one of the main issues faced by the Biosphere 2 experiment?

• Lack of sunlight

• Pollinators dying

• Too much food

• Excess oxygen

What percentage of time would you spend on agriculture in a closed biosphere?

• 35%

• 45%

• 25%

• 55%

Which animal was suggested as the most productive domestic animal in Biosphere 2?

• Chicken

• Dairy cow

• African pygmy goat

• Sheep

What was a major threat to food production in a closed biosphere?

• Lack of pollinators

• Excessive rainfall

• Unbalanced soil composition

• Too much sunlight

What caused the oxygen depletion issue in Biosphere 2?

• Lack of sunlight

• Excessive water

• Too much organic matter in the soil

• Too many plants

What would you need to do with all human and animal waste in a closed biosphere?

• Burn it

• Bury it

• Compost it

• Store it

What materials would your clothing be made of in a closed biosphere?

• Plastic and rubber

• Leather and denim

• Cotton, silk, and wool

• Polyester and nylon

What are the potential power sources for a closed biosphere?

• Solar and nuclear

• Wind and hydro

• Coal and natural gas

• Geothermal and tidal