23. How do plants make our climate balanced?A. They make oxygen humans and animals need.B. They can help clean water and reduce floods.C. They slow down global warming by taking in CO_{2}.D. They help reduce stress and help stay focused. 相关知识点: 试题来源: 解析 C 植物通过光...
Protein is a complex chemical structure of carbon, nitrogen, hydrogen and oxygen. Accounting for 50% of the body's dry weight, it has been estimated that humans consist of 50,000 different proteins. From the simple blink of an eye to the flow of blood to muscles under extreme stress, pro...
You may have felt the urge tobreatheat around 15 seconds, or even 10; that’s when most people start feeling uncomfortable. Actually, you’re still nowhere close to running out of oxygen. Youarebuilding up carbon dioxide in your body, and that signals to your brain that you need to brea...
案例介绍:求助者的父母长期感情不和,求助者认为主要原因是母亲过于强势,因此对母亲很有意见。后来在学业及找工作等问题上遇到困难,认为母亲不帮助自己。日常生活中因恋爱、工作等原因与母亲闹别扭,认为母亲不应该干涉自己,经常为这些琐事苦恼。结婚后不想与母亲生活在一起,也很少回去看望母亲。但面对母亲的体弱...
So ensure the flow of everything——oxygen,blood,and even thoughts and emotions.When stuck,it usually performs as pain. M:So,we need to avoid being stuck in a fixed way of thinking and try to do new things,...
"The ice-covered Jovian moon generates 1,000 tons of oxygen every 24 hours – enough to keep a million humans breathing for a day," NASA said in a statement. SEE ALSO:NASA found a super-Earth. It's in a tantalizing place. Europa, an orb just a little smaller than ourmoon,orbits th...
One benefit of parks is that plants absorb carbon dioxide and give off oxygen, which humans need to breathe. According to one study, an acre of trees can absorb the same amount of carbon dioxide that a typical caremitsin 11,000 miles of driving. Parks also make cities cooler. Scientists ...
Like other species, we are the products of millions of years of adaptation. Now we're taking matters into our own hands.
Why do humans need water? Our bodies are about 60 percent water [source: Mayo Clinic]. Water regulates our body temperature, moves nutrients through our cells, keeps our mucous membranes moist and flushes waste from our bodies. Our lungs are 90 percent water, our brains are 70 percent wate...
According to National Day Calendar, the first World Oceans Day's objectives were to move oceans off the sidelines to the center of discussion. The site also points out the human need for the oceans with the providing of food, making...