Unit 6 Review - Earth and Human Activity

Front

What does soil pH indicate?

Back

Soil pH indicates whether the soil is acidic or basic.

Front

What is desertification?

Back

Desertification is the process by which fertile land becomes desert, often as a result of drought, deforestation, or inappropriate agriculture.

Front

How does pollution impact food chains?

Back

Pollution can break the balance of food chains, leading to negative effects on ecosystems.

Front

What long-term effects can human choices have on ecosystems?

Back

Human choices can lead to pollution and desertification, negatively impacting ecosystems.

Front

What are the main components of healthy soil?

Back

Healthy soil consists of rock particles, air, water, and organic material.

Front

What is the role of organic material in soil?

Back

Organic material improves soil fertility and supports plant growth.

Front

What is overgrazing?

Back

Overgrazing occurs when animals graze on vegetation too much, preventing regrowth and leading to soil degradation.

Front

What is the significance of biodiversity in ecosystems?

Back

Biodiversity contributes to ecosystem resilience, stability, and productivity.

Front

How can conservation farming help the environment?

Back

Conservation farming practices help maintain soil health, reduce erosion, and improve water retention.

Front

What are the effects of deforestation?

Back

Deforestation can lead to habitat loss, increased carbon emissions, and disruption of water cycles.