Life and living (Topic 1 the Biosphere)

Question 1

What are the four systems of the Earth describe them:

Answer 1

lithosphere-thin layer of rocks and sand covering the earth
hydrosphere- contains all the water on earth
atmosphere-thin layer of gases mainly nitrogen,carbon dioxide and oxygen
biosphere- all areas of earth where life exists

Question 2

What are ecosystems?

Answer 2

the specific place animals live in to survive, like fish in water and tigers in forests

Question 3

What are decomposers and give an example:

Answer 3

organisms that break down dead matter like bacteria and fungi

Question 4

What does energy allow us to do?

Answer 4

move grow and recreate

Question 5

Name all the gases found in the atmosphere and what do they help with?

Answer 5

oxygen helps us breath

carbon dioxide helps plants make food during photosynthesis

Question 6

What does water help the earth with?

Answer 6

water in blood carries food and chemicals around the body

plants use water to grow

Question 7

What does soil do?

Answer 7

used as an anchor by plants

used for homes by some animals like worms & moles

Question 8

What is adaption?

Answer 8

characteristics animals have to live somewhere new like a fish from the wide ocean to a small tank