Question 11: Droughts, floods, and hurricanes are all effects of __________, which is changing weather patterns.
A. traffic jam B. global warming C. construction site D. ecological balance
Question 12: The destruction of forests is a serious __________ to many wild animals.
A. threat B. benefit C. support D. success
Question 13: One way to help protect the planet is to __________ resources, such as paper, plastic, and glass.
A. recycle B. waste C. avoid D. destroy
Question 14: Scientists study __________ to understand how living things interact with each other and their environment.
A. ecology B. ecological C. chemistry D. chemical
Question 15: The Great Barrier Reef is home to thousands of marine species, making it one of the most __________ ecosystems on Earth.
A. harmful B. fascinating C. essential D. vital
Question 16: The Amazon Rainforest, __________ is often called the "lungs of the Earth," produces about 20% of the world's oxygen.
A. who B. which C. whose D. where
Question 17: Deforestation leads to __________ loss, which forces many animals to leave their natural homes.
A. habitat B. pollution C. climate D. resource
Question 18: Many scientists believe that __________ warming is one of the biggest challenges facing humanity today.
A. regional B. local C. global D. seasonal
Question 19: The __________ is a region that experiences extreme cold and is home to animals like polar bears.
A. desert B. grassland C. pole D. forest
Question 20: The Earth __________ the Sun in approximately 365 days, causing the change of seasons.
A. orbits B. escapes C. creates D. avoids