Water currents can be found in streams, rivers and oceans throughout the world. Water current is the rate of movement in the water, and ways to describe water current include its speed and direction. There are different types of water currents which behave in different ways because they are ...
What are the important properties of water? Explain why bodies of water act as heat reservoirs, moderating climate. What is the role of vegetation in a drought? In fish, which organs are involved in the regulation of electrolytes? Describe how they function in freshwater and seawater. ...
Water covers 70 percent of Earth's surface and is a vital resource for people, organisms and the environment. Water pollution occurs when there is any physical, chemical or biological change to the quality of water bodies—rivers, lakes, oceans and ground water—that has harmful effects on any...
阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。What is pollution? Dirty air, waste water, litter and other dirty things are all pollution. We can see some of them, but 1 (other) we can’t. People have created lots of pollution and you can see it almost everywhere on th...
Water pollution is the contamination of water bodies (lakes, rivers, oceans, aquifers, and groundwater), very often by human activities. Water pollutionoccurs when pollutants (particles, chemicals, or substances that make water contaminated) are discharged directly or indirectly into water bodies witho...
Water helps to take the nutrition(营养) from food to our bodies. It also helps to take the wastes away from different parts of our bodies.In our homes, we also need water for many things. We need water for cooking, washing and flushing(冲水) the toi-let. About three quarters of the...
From dehydration and muscle soreness to nausea and indigestion, the typical discomfort and pain can all be explained by unnatural conditions on long flights.
continuous cycle. Water is constantly rising through the air and being blown around to different areas. That same water also falls and flows across surfaces, picking up chemicals and other pollutants. Those pollutants are carried into bodies of water, back into the air and into the water supplie...
Answers. The two cause of water pollution are- a Industrial sewage - Industries of paper, textile, sugar mills etc. discharge untreated industrial sewage directly into the water bodies which causes water pollution. b. Human activities- Bathing of human beings and animals in or near lakes, rivers...
Step-by-Step Solution:1. Definition of Water Pollution: Water pollution refers to the contamination of water bodies (like rivers, lakes, and oceans) with harmful substances, which diminishes the quality of wate