What are common air pollutants?
What will be an ideal response?
Answer: They include carbon dioxide, carbon monoxide, sulfur oxides, nitrogen oxides, hydrocarbons and particulates.
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If an astronaut whose total mass is 100 kg ejects 0.1 kg of gas at a speed of 50 m/s from her propulsion pistol, her recoil speed is
A) 50 m/s. B) 5.0 m/s. C) 0.5 m/s. D) 0.05 m/s.
What is the most distinctive physical property of the mineral halite? What will be an ideal response?
Which of the following is one of the United Nations' Sustainable Development Goals?
A. Conserve and sustainably use the oceans and marine resources. B. Sustainably manage forests and combat desertification and biodiversity loss. C. Take urgent action to both combat and adapt to climate change. D. All of these.
The fact that life expectancy has increased significantly over the past 60 years in developing nations is primarily a result of the
A) epidemiologic transition. B) cultural transition. C) demographic transition. D) socioeconomic transition.