Questions with the keyword 'earth'

• why is the sky blue? by and 1 other. to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• How to grey clouds know when to rain ? by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• If a new baby was born would it make the world heavier? by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• how do you now thers solid iron in the midle of the earth by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• When did the world start? by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• Why does gravity pull you down? by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• Is it possable for the earth implode by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• why are dimonds and other types of gems so rare and expensive to buy by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• is there lava under the ground by and 1 other. to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• how does the world know how to change from night to day and from day to night by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (so far, 4s comments )