Earth's Systems and How They Support Life

Air, water, land and living things, and how they connect to keep life going.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

Which of these does an animal need from Earth's systems to stay alive? Select all that apply.
In the water cycle, what happens during evaporation?
Why is soil important to Earth's systems?
How do plants help the air that animals breathe?
A forest is cut down and the soil washes away in the rain. What is this called?
Which statement best shows that Earth's systems are connected?
A school garden bed measures 4 square metres. In dry weather the plants need about 25 litres of water for every square metre each week. Rain supplied 30 litres to the bed this week. How many more litres must the students add?
Which of these describe water moving between Earth's systems? Select all that apply.