Answer:
Q1.The sun is Earth's major external source of heat energy. The sun's energy travels to Earth as electromagnetic radiation. The amount of radiation we receive depends on the time of day and season, but it is constantly enough heat energy to support
Q2.Arrows have been used for warfare and defense as well as hunting and provision. The arrow can be used to provide direction – pointing us in the way we should go. The arrow is a symbol of strength and bravery. It requires both strength and bravery to set the arrow free from the bow, sailing towards its mark.
Q3.Nothing is more important to us on Earth than the Sun. Without the Sun's heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
Q4.Greenhouse gases are gases in Earth's atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere.
...
The main greenhouse gases are:
Water vapor.
Carbon dioxide.
Methane.
Ozone.
Nitrous oxide.
Chlorofluorocarbons.
Q5.Greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons (CFCs). The absorbed energy warms the atmosphere and the surface of the Earth.
Q6.The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth. ...
Explanation:
sana makatulong po
