Unit 1 and 2

What is the greenhouse effect?

• The increase in Earth's gravity due to human activities.

• The warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.

• The cooling of Earth's surface due to the reflection of sunlight.

• The greenhouse effect is caused by the depletion of ozone in the stratosphere.

Name three major greenhouse gases.

• hydrogen, fumes, fog

• oxygen, smog, methane

• argon

• carbon dioxide, methane, nitrous oxide

What is biodiversity and why is it important?

• Biodiversity refers to the number of species in a single habitat.

• Biodiversity is unimportant as ecosystems can function with few species.

• Biodiversity is the total biomass of all organisms on Earth and it is important for life in all planets.

• Biodiversity is the variety of life on Earth, and it is important for ecosystem stability.

Explain the concept of sustainable development.

• Sustainable development is the practice of meeting present needs without compromising the ability of future generations to meet their own needs.

• Sustainable development focuses solely on economic growth.

• Sustainable development is about preserving resources for the wealthy.

• Sustainable development means using up all resources now for immediate benefits and ending all of them before future generations do.

What are the main causes of deforestation?

• Soil erosion, building of houses, misusage of resources and protective policies by govenments.

• Climate change effects

• Natural disasters

• Agricultural expansion, logging, infrastructure development, and urbanization.

How does pollution affect marine life?

• Pollution negatively impacts marine life by harming habitats, causing disease, and disrupting ecosystems.

• Pollution improves marine habitats and promotes biodiversity.

• Marine life thrives in polluted waters due to increased nutrients.

• Pollution has no effect on marine ecosystems or species once it is not absorved by fish or other animals.

What role do trees play in the environment?

• Trees primarily absorb water from the soil till there is no more available.

• Trees are mainly used for producing fruits and nuts.

• Trees have no impact on the climate or air quality.

• Trees are vital for oxygen production and carbon dioxide absorption.

Define renewable and non-renewable resources.

• Non-renewable resources can be replenished quickly and easily, and renewable resources are always available to humans.

• Renewable resources can be replenished naturally over time, while non-renewable resources do not replenish at a sustainable rate.

• Renewable resources are always man-made and cannot be found in nature.

• Renewable resources are finite and will eventually run out.

What is climate change and its potential impacts?

• Climate change is the long-term alteration of temperature and typical weather patterns in a place, primarily driven by human activities.

• Climate change is a temporary weather phenomenon caused by natural events.

• Climate change only affects polar regions and has no impact on other areas.

• Climate change is solely a result of volcanic activity and solar cycles that burn the soil and cause irretrievable damages.

How can individuals contribute to environmental conservation?

• By avoiding community clean-up events

• By ignoring recycling programs

• By having sustainable practices and community involvement.

• By using more plastic products specially in children's parties.