When is Earth Day celebrated every year?

Earth Day was first celebrated in which year?

What is the main aim of Earth Day?

Which gas is most responsible for global warming?

What does the 3R principle stand for?

Cutting down trees is known as:

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

What percentage of Earth’s surface is covered by water?

Which is the largest source of freshwater on Earth?

Planting more trees helps to:

Earth Day is celebrated in how many countries?

What is climate change mainly caused by?

What is the best way to protect Earth?

Which of these helps save water?

Which part of Earth supports life?

What is compost made from?

Which practice helps reduce waste?

Which gas do plants absorb from the air?

What is e-waste?

What does “Go Green” mean?