Human Impact on Vegetation and Environment

Satellite images reveal human impacts on Earth, including increased greening due to more vegetation. This is measured by the Leaf Area Index, which has risen due to expanded agriculture and CO2 emissions. While crops absorb carbon, they require resources and chemicals. CO2 acts as a plant fertilizer, complicating the greening process. Both rainforests and monocultures contribute to this change, highlighting the scale of human influence.

What surprising effect of human activity on the planet is highlighted in the video?

• Making the planet greener

• Rising sea levels

• Decreasing biodiversity

• Increased desertification

What metric is used to measure the increase in green vegetation on Earth?

• Greenhouse Gas Index

• Vegetation Density Index

• Leaf Area Index

• Carbon Footprint Index

Which of the following is a reason for the increase in vegetation due to agriculture?

• Reduction in water usage

• Expansion of crop-growing areas

• Decrease in pesticide use

• Less reliance on fertilizers

What is a major environmental concern associated with industrial agriculture?

• Decreased carbon absorption

• Increased biodiversity

• Excessive use of water and chemicals

• Reduction in crop yields

How do increased CO2 emissions affect plant growth globally?

• They hinder photosynthesis

• They act as a global fertilizer

• They reduce plant growth

• They have no effect on plants

What is the complexity mentioned in the greening of the planet?

• Only rainforests contribute to greening

• Both rainforests and monocultural farms increase the Leaf Area Index

• Monocultural farms decrease the Leaf Area Index

• Only monocultural farms contribute to greening

What does the increase in Leaf Area Index indicate about human impact?

• Humans are reducing the planet's greenness

• Humans are not affecting the planet's greenness

• Humans are significantly altering the planet's greenness

• Humans are only affecting urban areas