GRADE 9 - REVISION 2

Scientists warn that __________ is causing rising sea levels and extreme weather.

• biodiversity

• climate change

• habitat

• landform

A healthy __________ is necessary to ensure that plants and animals can coexist in nature.

• ecosystem

• ecological balance

• nature reserve

• pesticide

Farmers use __________ to improve soil quality and help crops grow faster.

• biodiversity

• fertilizers

• pesticides

• grasslands

The __________ in the ocean starts with small fish and ends with large predators.

• ecosystem

• biodiversity

• food chain

• climate change

The African savanna is a vast __________, home to many wild animals such as lions and elephants.

• rainforest

• nature reserve

• landform

• grassland

Deforestation is destroying the __________ of many endangered species, leaving them without shelter and food.

• habitat

• orbit

• ecological balance

• food chain

The Grand Canyon is an example of a natural __________ formed by erosion.

• habitat

• landform

• nature reserve

• pesticide

A __________ is an area set aside to protect wildlife and natural environments.

• habitat

• grassland

• nature reserve

• food chain

Scientists continue to study planets and stars beyond our solar system in __________.

• biodiversity

• outer space

• landform

• ecosystem

The Earth takes one year to complete its __________ around the Sun.

• peak season

• habitat

• orbit

• nature reserve