The Living World

Question 1

What are natural changes that affect ecosystems?

Answer 1

Drought - causes plants to die due to lack of water for photosynthesis so consumers decrease also
Migration of new species - forms competition for food, space and water, causing imbalances throughout food webs

Question 2

What are human changes that affect ecosystems?

Answer 2

Farming - causes eutrophication which leads to algae build up and decomposition which removes oxygen from bodies of water, killing marine life
Deforestation - lack of plants means consumers can’t feed off of or create habitats on trees, means they die out