Thepercent of waterdepends on your hydration level.2 People feel thirsty when they have already lost around 2-3% of their body's water. Being dehydrated by just 2% impairs performance in mental tasks and physical coordination.4 Although liquid water is the most abundant molecule in the ...
You are made of 73 percent water. You have 206 bones. There are about 60 muscles (肌肉) in your face; you use 20 of them to smile but 40 to frown. Your heart beats over 100,000 times each day. You really are amazing! The human body is a complex machine. Most of the time we ...
annual pollution from all types of plastics was estimated to be between 4.8 million and 12.7 million tonnes (between 5.3 million and 14 million tons) in the early 21st century, and floating plastic waste had accumulated inEarth’sfive subtropical gyres, which cover 40 percent of the world’s ...
requirements of water for industrial use often exceed those for humanconsumption. For example, the water used in high-pressure boilers must be at least 99.999998 percent pure. Becauseseawatercontains large quantities of dissolved salts, it must bedesalinatedfor most uses, including human consumption....
(★★)___About 60 percent of the average adulthuman body is made of water.This includes most of your brain,heart,lungs,muscles and skin,and even about 30percent of your bones.Yet there's little scientific agreement about the exact amount of the stuff an individual should consume each day...
根据第一段中的 "About 60 percent of the average adult human body is made of water. This includes most of your brain, heart, lungs, muscles and skin, and even about 30 percent of your bones." 可知第一段通过提供事实来展开叙述,故选A。 (2) 考查推理判断。根据第二段中的 "The'8×8'...
Did you know the following facts about water? 阅读理解 Did you know the following facts about water? ●There is about the same amount of water on Earth now as there was millions of years ago. ●Nearly 97 percent of all the world's water is salty or otherwise undrinkable.Another 2 ...
[translate] aa man is body is 65 to 70 percent water. if we do not have enough water, we may feel tired and may become ill 一个人是身体是65%到70%水。 如果我们没有足够的水,我们也许感到疲乏,并且也许变得不适[translate]
About 60 percent of the average adult human body is made of water. This includes most of your brain, heart, lungs, muscles and skin, and even about 30 percent of your bones. Yet there's little scientific agreement about the exact amount of the stuff an individual should consume each day...
This kind of plastic that’s used only once before being thrown away is called single-use plastic, and it makes up more than 40 percent of all plastic rubbish.WHERE DOES THE PLASTIC GO Scientists think that 8.8 million tons of plastic winds up in the ocean every year. How does it get ...