Fill in the Blanks Global Warming Online version A fill in the gap exercise about global warming. by Kiarna Benson 1 emissions levels effect atmosphere heat escape melting warming greenhouse glaciers enter rise human Global is happening due to the increase of gases in the . Sea are rising due to ice and disappearing . Greenhouse gases allow solar radiation to the atmosphere and they do not let the heat , causing the temperature to . The greenhouse refers to the retention of in the atmosphere , due to gas from activities .