The spectrum of a hot Jupiter shows absorption bands due to the presence of water in the atmosphere of the planet. Why is it unlikely that we would observe liquid water on such a planet? 

Is it easier or more difficult to detect the transit of a planet like the Earth around a star that is smaller than the Sun? 

The greenhouse effect occurs in the 

Which of the following is the most effective greenhouse gas? 

The major way in which we learn about Earth’s interior is through 

The development of a photosynthetic life had a very significant effect on a composition of the atmosphere. Which gas/es appeared in the atmosphere due to photosynthetic life? 

Which of the following is a reason early living organisms on Earth could not have survived on land? 

The current atmosphere has much less water vapour than the early atmosphere. What happened to it? 

What are reasons that fossils from the Precambrian time are very rare? 

What causes the release of oxygen into Earth’s atmosphere?