Human Impact and Environmental Issues

This video lesson explores the negative effects of human activities on the biosphere, including agriculture, resource acquisition, ozone depletion, acid rain, climate change, pollution, and biodiversity loss. It discusses practices like deforestation, monoculture, and the use of chemical fertilizers in agriculture, as well as the environmental impact of mining, logging, and oil drilling. The video also covers the causes and consequences of ozone depletion, acid rain, and climate change, highlighting the role of fossil fuels and greenhouse gases. Additionally, it examines pollution from non-biodegradable toxins and the ethical considerations surrounding biodiversity loss and species extinction.

What is the primary focus of the video lesson on human impact in the biosphere?

• Negative effects of human activities

• Technological advancements

• Positive effects of human activities

• Natural disasters

Which agricultural practice involves growing only one type of crop repeatedly in the same area?

• Polyculture

• Agroforestry

• Monoculture

• Crop rotation

What environmental issue is caused by the overuse of chemical fertilizers in agriculture?

• Deforestation

• Soil erosion

• Desertification

• Water pollution

Which of the following is a consequence of mining and logging activities?

• Increased biodiversity

• Ozone layer restoration

• Habitat destruction

• Reduction in carbon emissions

What compounds are responsible for the depletion of the ozone layer?

• Oxygen and nitrogen

• Carbon dioxide and methane

• CFCs and aerosols

• Nitrogen oxides and sulfur oxides

What is a major cause of acid rain?

• Excessive irrigation

• Burning of coal and fossil fuels

• Deforestation

• Overfishing

How does acid rain affect aquatic ecosystems?

• Increases water temperature

• Raises water pH levels

• Lowers water pH levels

• Increases oxygen levels

What is one of the effects of climate change mentioned in the video?

• Stabilized weather patterns

• Decreased global temperatures

• Melting glaciers and ice caps

• Increased biodiversity

Which pollutant was responsible for the decline in the bald eagle population?

• Lead

• DDT

• Mercury

• Carbon monoxide

What is a key ethical consideration in protecting endangered species?

• Aesthetic value

• Technological advancements

• Economic benefits

• Ethical arguments for and against protection