facts about rainforests D. how much oxygen rainforests make 相关知识点: 试题来源: 解析 答案见上【61题详解】 细节理解题。根据第二段"In fact, the Amazon Rainforest is the "lungs(肺) of the Earth' because it produces(生产) 20%of the world's oxygen(氧气)."可知亚马逊雨林为世界提供了...
3. About 20% of the body's blood goes to the brain Maintaining brain function, like with all living tissues, relies on the supply of oxygen from blood. The brain receives between 15-20% of blood from the heart at rest—butmany factors can effectthis, including age, gender, and weight....
It’s crazy to think about, but many of us know more about the eggs in our kitchen than we do about the eggs in our own body. Here are a few egg cell facts to get your started on your educational journey! Egg cell fact #1: The egg is one of the biggest cells in the body. ...
Significance A duckweed colony blocks the sunlight, which results in the decline of underwater plants. It also depletes the oxygen in the water, which causes fish to die. Control Duckweed is difficult to control. Reduce the runoff of nutrients into bodies of water and use bubble aeration to ...
Theories about anoxia (oxygen depletion) are high on the list, as less oxygen in the water would explain the death rate of marine life. At this same time, trees were really coming into their own and could have contributed to the anoxia. Most of the evidence, however, points to...
an antiviral drug, and the early results seemed promising . u.s. hospitals, by contrast, were taking a more conservative approach, limiting their interventions to things like providing oxygen. today, however, we know that less was more. the hong kong treatment seems to have offered no extra ...
In addition to thenitrogen,oxygen, andsulfuratoms commonly found in heterocycles, a large number of other elements form such rings—of greater or lesser stability. Suchcompoundsare as yet of little practical importance. Some of the main classes are described below according to the elements they co...
—Five interesting facts about turbochargers: 1. Unaltered Basic Principle The basic principle of the nearly 100-year old invention remains the same today. The exhaust stream drives a turbine wheel, which is connected to a second wheel over a shaft. This wheel compresses the fresh air that is...
Such an explanation overlooks two important facts, though. First, as devout Muslims, Pathans believe that all individuals are equal in the eyes of the creator. Consequently, there is no absolute genealogical “litmus test” of worthiness equivalent to the Hindu notion of inborn purity and pollutio...
译文:The oxygen atom is nearly 16 times as heavy as the hydrogen.例5:1975年香港服装的出口额比1965年增加了5.5倍。译文:In 1975 the export value of Hong Kong garments was 6.5 times that of 1965.例6:The length of the laser tube was reduced ten times.译文1:这种激光管...