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In this section we will be looking at how important greenhouse gases are to sustain life on Earth. The greenhouse effect is the way in which heat is trapped close to Earth’s surface by “greenhouse gases” . By the end of this lesson you will realise the importance of protecting our planet from increasing greenhouse gases.
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Birth , Life and Death of a star
Discover how stars are born, how they evolve, and how they die. Scientists speak of stellar evolution when talking about the birth, life and death of stars. The lifetime of individual stars is way too long for humans to observe the evolution of a single star.
