Scientists know that human activities are causing climate change because they understand how heat-trapping gases like carbon dioxide affect the atmosphere's temperature, they know these gases are increasing due to human actions, and they have ruled out other potential explanations. The document also notes that climate change is having devastating effects like massive bushfires in Australia that destroyed property and took lives, ice is melting due to warming temperatures, and sea levels are rising each year.

1. CLIMATE CHANGE
By Elizah Goimba

2. HUMAN CAUSE CLIMATE CHANGE
Scientists know that the warming climate is caused by human
activities because:
They understand how heat-trapping gases like carbon dioxide
work in the atmosphere
They know why those gases are increasing in the atmosphere
They have ruled out other possible explanations

3. EFFECTS OF CLIMATE CHANGE
Massive bush fire in Australia due to climate change. Many lives were
lost and also many properties have been devastated by the fire

4. EFFECTS OF CLIMATE CHANGE
Large tons of ice are now starting to melt
due to global warming.

5. EFFECTS OF CLIMATE CHANGE
Sea levels are now increasing every year.

6. To Conclude, Human Activity is the cause of
climate change