Which layer of the Earth’s atmosphere protects us from harmful UV rays?

What is the process by which plants make their food?

Which of the following is a renewable source of energy?

What does the 3Rs stand for in environmental conservation?

Which gas is most abundant in Earth’s atmosphere?

What is the main cause of acid rain?

Which of these is a biodegradable waste?

Which ecosystem is known for having the highest biodiversity?

What is the term for animals that are at risk of extinction?

Which part of a plant absorbs water and minerals from the soil?

What is the main source of energy for life on Earth?

Which environmental problem is caused by excessive plastic waste?

What is the practice of planting trees called?

Which gas do plants absorb during photosynthesis?

Which of these helps in water conservation?

What is the name of the process where water changes into vapor?

Which of the following causes deforestation?

Which type of pollution is caused by loud sounds from traffic and machines?

What is the natural home of an organism called?

Which energy source uses moving air to generate electricity?

What is the main reason for ozone layer depletion?

Which of these is a fossil fuel?

What is the process of cutting down forests on a large scale called?

Which of these animals is commonly used as an indicator of a healthy ecosystem?

What is the main cause of water pollution in rivers?

Which environmental day is celebrated on June 5 every year?

What is compost made from?

Which of these is a greenhouse gas?

What is the term for protecting wild plants and animals in their natural habitat?