Directions: Complete the sentences below by choosing from the pool of words given in the box. Write your answer on your answer sheet. Altitude atmosphere/ life gases/ exosphere/ mesosphere five/ nitrogen radiation oxygen ozone protects / temperature. thermosphere/ troposphere/ Earth is surrounded by a blanket of air called 1) It is a mixture of 2)_ The most abundant gas found in the atmosphere is 3). There are 4). _layers in the atmosphere namely: 5). stratosphere, 6) 7)_ 8) 1 The two factors that are considered in determining the layers of the atmosphere are 9) and 10) us from layer. from the Sun through the 13) The atmosphere has vital roles for us. First, it 11) dangerous 12) we breathe. Lastly, it makes Earth "livable" by Second, it contains the 14) regulating solar energy or the energy coming from the sun which drives all life processes on Earth. Because of the atmosphere, earth is not "too hot" nor "too cold" to sustain 15)__________ Lesson 2. Greenhouse Effect What is Greenhouse Effect? Are you familiar with greenhouses? In temperate countries, a greenhouse is used to grow seedlings in the late winter and early spring and later, planted in the open field when the weather is warmer. Greenhouses also protect plants from weather phenomena such snowstorm or dust storms. In tropical countries, greenhouses are used by commercial plant growers to protect flowering and ornamental plants from harsh weather conditions and insect attack.


the answer is in the picture I already answered it​