[填空题]The ozone layer in the stratosphere______.

[简答题]If the ozone layer is destroyed by car, what will happen

[单项选择]New data has（）that the damage to the ozone layer is not confined to the southern hemisphere.
A. ratified
B. confirmed
C. assured
D. approved

[填空题]The ozone layer in the stratosphere______.

[单项选择]
Introduction to How Ozone Pollution Works
The weather report on the radio or TV tells you that it is going to be sunny and hot and that an orange ozone alert has been issued. What is ozone What does an orange alert mean Why should you be concerned about it
In this article, we will examine what ozone is, how it is produced, what health hazards it poses and what you can do to reduce ozone pollution.
Ozone is a molecule of three oxygen atoms bound together (O₃). It is unstable and highly reactive. Ozone is used as a bleach, a deodorizing agent, and a sterilization agent for air and drinking water. At low concentrations, it is toxic.
Ozone is found naturally in small concentrations in the stratosphere, a layer of Earth’s upper atmosphere. In this upper atmosphere, ozone is made when ultraviolet light from the sun splits an oxygen molecule (O₂), forming two single
A. a bleach
B. a oxidizer
C. a deodorizing agent
D. a sterilization agent for air and drinking water

[单项选择]

Ozone is a form of oxygen. It is found in the air we breathe and in the upper atmosphere. Near the Earth, ozone in the air is a danger to life because it is a pollutant. But between ten and fifty kilometers up in the atmosphere, ozone protects life on the Earth. Ozone forms in the atmosphere through the action of radiation from the sun. Ozone blocks harmful radiation from reaching the Earth. Scientists say a decrease in ozone and an increase in the harmful radiation will cause many more cases of skin cancer. And it will harm crops, animals and fish.
Ozone problems first became known in 1985. British scientists reported that ozone levels in the Antarctic atmosphere near the South Pole fell sharply each year in October and November. 1987 was the first year that a huge hole developed in the ozone layer above the Antarctic.
A recent study of the atmosphere over the Arctic area near the North Pole showed extreme thinning of the ozone. Officials from the America
A. Between ten and fifty kilometers up in the atmosphere.
B. In the far sky.
C. Near the sun.
D. Far from the sun.