Why is oxygen essential for life?, It changes color, It produces energy, It makes water sweet, It creates rocks, Why can oxygen be harmful in large amounts?, It damages cells, It stops breathing, It removes water, It freezes cells, What was the Great Oxidation Event?, Plants disappeared, Oceans formed, First animals appeared, First oxygen buildup, How do plants produce oxygen?, Evaporation, Digestion, Photosynthesis, Respiration, Why were ancient insects larger?, Colder climate, Higher oxygen levels, Fewer plants, More food, When did animals first appear?, 70 million years ago, 700 million years ago, 7 billion years ago, 7 thousand years ago, Why is sea algae important?, It warms oceans, It feeds insects, It cleans rocks, It produces most oxygen

question

oleh
Cetakan
Benamkan

Papan mata

Gaya visual

Pilihan

Lebih tepat seperti ini

What do plants and animals need to survive? 2
What do plants and animals need to survive? 2
oleh
Kuiz
How are fossils formed? Year 3
How are fossils formed? Year 3
oleh
Membuka kotak
CARBON CYCLE AND OXYGEN CYCLE FORM 1 SCIENCE
CARBON CYCLE AND OXYGEN CYCLE FORM 1 SCIENCE
oleh
Tukang gantung
Carbon Dioxide Oxygen Cycle
Carbon Dioxide Oxygen Cycle
oleh
Gambar rajah berlabel
Conversation Questions Environment & Pollution
Conversation Questions Environment & Pollution
oleh
Kad rawak
Changes to ecosystem quiz
Changes to ecosystem quiz
oleh
Kuiz
Living Questions 1
Living Questions 1
oleh
Roda rawak
Environmental protection: discussion questions
Environmental protection: discussion questions
oleh
Kad rawak

Tukar templat

Pulihkan autosimpan: ?