Human interference biome- Deforestation

What happens to wildlife when a forest is cut down?

The natural habitat is severely reduced, leading to species extinction.

What is lost as rainforest is destroyed?

Biodiversity and the opportunity to study unidentified species.

Why is the loss of plant species a concern?

Some plants contain chemicals that could lead to cures for serious illnesses.

What percentage of medicines come from rainforest plants?

About one quarter of all medicines.

What is curare and where does it come from?

Curare is derived from a tropical vine and is used as an anaesthetic.

What happens to the nutrient cycle when a forest is cleared?

The source of humus is removed, leading to nutrient leaching and soil infertility.

What is laterite soil?

Soil that becomes hard and brick-like, unable to support plant growth after deforestation.

How quickly can soil erosion occur after forest clearance in mountainous areas?

Within days.

How does deforestation affect rainfall patterns?

It reduces moisture release into the atmosphere, leading to fewer rain clouds and less rainfall.

What can happen to an area after deforestation due to reduced rainfall?

The area can become arid and desert-like within a few years.

What is deforestation?

The unsustainable removal of trees from a biome.

What is the rate of rainforest disappearance globally?

About 40 hectares per minute.

What are some reasons for deforestation in developing countries?

Extraction of timber, agriculture for cash crops, mining, urbanization, and road-building.

What is the impact of deforestation on the soil?

It depletes the texture, water content, and organic content of the soil.

What is the Trans-Amazon Highway associated with?

Deforestation due to road-building projects.

How does deforestation impact the climate?

It alters climatic patterns, leading to drought and arid conditions.

What is the consequence of cutting down rainforest trees?

It leads to a decline in rainfall and affects areas beyond the forest.

What is the relationship between deforestation and cash crops?

Cash crops are often grown on deforested land to repay international debt.

What is the effect of heavy rain on cleared forest soil?

It washes away remaining nutrients and leads to soil erosion.

What is the significance of the O horizon in forest ecosystems?

It is a source of humus that is removed during deforestation.

What happens to the moisture cycle when forests are cut down?

Less moisture is transpired, leading to fewer rain clouds and decreased precipitation.