came from billions of cyanobacteria on the planet's ocean. This oxygen is an essential component in respiration. Until today, various lifeforms coexist on this planet named Earth. Its atmosphere has continued to play an important role in protecting the p...
The atmosphere protects the earth. What is the atmosphere made of? A. Gas and dust B. Water and fire C. Earth and moon D. Stars and gas 相关知识点: 试题来源: 解析 A。本题考查对大气层组成的了解,大气层由气体和尘埃组成。B 选项水和火不对;C 选项地球和月亮不对;D 选项星星和气体不对...
The inner ear is a network of channels containing fluid that moves in response to sound or movement. To perform the function of hearing, the ear converts the energy of pressure waves moving through the air into nerve impulses that the brain perceives as sound. Vibrating objects, such as ...
Which layer of the Earth is the coolest in temperature? Which layer of the atmosphere has the lowest temperature? What is the lowest layer of the Earth's atmosphere? What is the highest layer of the atmosphere? What are the layers of earth atmosphere?
doi:10.1029/2010eo460005Spencer R. WeartJohn Wiley & Sons, Ltd
Earth's atmosphere at the end of the Triassic contained the same kinds of gases it does today — nitrogen, oxygen, carbon dioxide, water vapor, methane, argon and other gases in trace amounts. The concentrations of some of these gases, however, was very different. ...
Earth has an atmosphere. The atmosphere protects us from harmful rays. What is the atmosphere made of? A. Water vapor B. Gases C. Soil D. Rocks 相关知识点: 试题来源: 解析 B。解析:地球有大气层,大气层保护我们免受有害射线的伤害。大气层是由气体组成的。选项 A 水蒸气只是大气层的一部分...
When we talk about the Weather,we mean what Earth's atmosphere (大气层) is like at a particular (特定的) time and place.Weather reports tell us he temperature and if it is wet (潮湿的) and foggy or dry (干燥的) and sunny. The sun makes Earth's weather.The sun makes the air hott...
3.Researchers and many scientists are concerned that the earth's climate and atmosphere are becoming warmer.What scientists do agree on is that the temperature will continue to increase if measures are not taken to reduce pollution and emissions(排放物) from cars and factories. ...
Components of the Atmosphere | Gases & Importance from Chapter 19 / Lesson 1 155K Learn what gases make up the atmosphere. Identify the components of the atmosphere and understand the significance of the composition of gases in Earth's air. Related...