Which mixture of gasses is thought to have made up earths wary atmosphere

The mixture of gases that is thought to have made up Earth's early atmosphere is hydrogen, water vapor, ammonia, methane, carbon dioxide. This is previous to life so oxygen was not present because it was produced when green plants existed to produce oxygen through photosynthesis. Ozone was absen and so the UV radiation entered the atmosphere and it is thought that (along with electrical discharges) could vave contributed to the formation of the first organic molecules from the given mixture of inorganic gases.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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