1 Climate is average temperature for certain region of the world. 2 No, the climate is different for different parts of the world. Yes, it changes. 3 Climate in Russia varies from very cold in north part to mild climate in central and south part of the country. 4 The greenhouse effect means that heat from sunlight can't go back to space. 5 It happens because of some obstacles like smog or clouds prevents cooling down. 6 Greenhouse effect makes the climate become warmer. This leads to melting ice at the poles of our planet so sealevel rises up. 7 Yes, our planet is the only place we can live. We need to protect the planet from garbage, deforestation, pollution etc.