Pollution is a substance that is harmful to the environment or makes it less attractive. Pollution can occur naturally but it is usually those substances that humans are in control of that are of most concern.
that occurs in a harmful concentration.It can be a natural air component,such as carbon dioxide,that rises above its normal concentration,or something not usually found in the air,such as a lead compound emitted by cars burning leaded gasoline.A secondary air pollutant is a harmful chemical ...
Air pollution is one type of pollution Pollution refers to the presence ofsubstances in the environment that are harmful or toxic. Toxic means poisonous. The substances, which we refer to as ‘pollutants,’ may be harmful to human health. May may also be harmful to other animals as well as...
完形填空__ What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?___ I can’t tell you all about drugs, but I can ___36___ you think about them in this ___37___ way. Your body is a very complicatedmachine, ___38__...
that occurs in a harmful concentration.It can be a natural air component,such as carbon dioxide,that rises above its normal concentration,or something not usually found in the air,such as a lead compound emitted by cars burning leaded gasoline.A secondary air pollutant is a harmful chemical ...
Step 1: Define Air PollutionAir pollution refers to the presence of harmful substances in the atmosphere that can adversely affect human health and the environment. These harmful substances include solid particles, gases such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2),...
根据“Their study found that air pollution is harmful(有害的) to pollinators(传花粉者)—insects like bees and butterflies. They can't smell flowers because of the pollution."可知研究发现空气污染对传花粉的 昆虫是有害的,有污染就闻不到花的味道,因此该实验主要是关于传花粉的昆虫受空气污染的影响...
Air pollution is caused by humans introducing chemicals and other materials into the air. These pollutants are dangerous to both the environment and our own health. Air pollution has a wide range of effects, from respiratory disease to climate change. Un
根据“Their study found that air pollution is harmful to pollinators — insects like bees and butterflies. They can’t smell flowers because of the pollution.”可知因为污染传花粉者不能闻到花,所以推断因为闻不到花,它们就不能为植物传粉,故选C。2.推理判断题。根据“To do their study, Ryalls’ ...
AQI is a standardized scale, issued by the EPA, that helps the public understand the health risks associated with various air quality levels and pollution.