How Oxygen Increased (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
7 questions from this quiz
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Practise the questions
7 questions from this quiz
When did algae and early plant life first appear on Earth?
When did algae and early plant life first appear on Earth?
2.7 billion years ago
Which process did early algae and plant life carry out?
Which process did early algae and plant life carry out?
Photosynthesis
What energy source does photosynthesis use?
What energy source does photosynthesis use?
Sunlight
What are the two products of photosynthesis?
What are the two products of photosynthesis?
Glucose and oxygen
Which gas steadily increased in the atmosphere due to photosynthesis?
Which gas steadily increased in the atmosphere due to photosynthesis?
Oxygen
How long did the buildup of oxygen in the atmosphere take?
How long did the buildup of oxygen in the atmosphere take?
Millions of years
What did the oxygen buildup in the atmosphere eventually enable?
What did the oxygen buildup in the atmosphere eventually enable?
Development of more complex life forms