When the water warms up, the concentration of dissolved oxygen in the water decreases and this reduces the chance that the salmon eggs will survive. 当水温上升时,水里溶解的氧气量会下降。这就降低了鲑鱼鱼卵的存活率。 And the trees also help keep the soil on the banks of the stream in plac...
This leads to a higher concentration of water vapor in the atmosphere. In cooler climates, the air holds less water vapor, resulting in lower humidity levels. That's why certain places feel dry and others feel humid, even at the same temperature. What Relative Humidity Measures Relative ...
It is reported that exercise snacks can be as useful as traditional exercise methods. Just three exercise snacks a day can benefit (使受益) your physical health. Besides that, there are lots of other benefits. Your concentration (专注力) and creativity get better, and you can become more ...
In our always-connected world, boredom may be a hard-to-define state, but it is a fertile one. Watch paint dry or water boil, or at least put away your smartphone for a while, and you might unlock your next big idea. A. Determination. B. Concentration. C. Mental deterioration. D....
In the 1930s and '40s, Arkansas was a leader in the cinnabar mining industry. Because mercury is a bioaccumulative toxin (PBT), its concentration increases over time. In Arkansas' warm, wet weather, mines often flood. Mercury from man-made soil erosion is then released into the water source...
Figure 2. Automatic potentiometric titration of 10%-vol Ludox-TM by 1N HCl addition. 图2 通过自动电位滴定法将 1N HCl 加入到 10%体积的 Ludox TM 二氧化硅溶液中 5. 体积滴定法测定 Zeta 电位和添加剂的关系 The Zeta-APS instrument is also capable of performing automatic Volumetric titrations whereb...
CO2is released through natural processes, such as volcanic eruptions, plant respiration and animals and humans breathing. Butthe atmospheric CO2concentration has increased by 50%since the Industrial Revolution began in the 1800s, due to human activities like the burning of fossil fuels and large-scal...
**原文定位:** 根据题干定位到原文第三段第一句“Dean believes that any upper hand women might have in open-water swimming over long distances is more about mental adaptation and the ability to bear discomfort than about insulation (阻隔).” **选项分析:** - A. 对保暖的强烈意识。原文未提及...
Reading blood pressure entails noting two numbers on your blood pressure monitor, each representing different aspects of your cardiovascular function. These two numbers are typically separated by a slash, for instance, 120/80 mmHg. The first number is referred to as systolic blood pressure, and th...
According to a recent survey conducted by CCTV, a high proportion of 84.7 percent of people admitted that technology had great influence on their life and they couldn’t live without it. There is no denying that technology enjoys...