Plants and animals are largely made of water. So are humans. They need to keep enough water inside them, or they could die. We get some of the water we need by eating food that has water in it. Drinks, such as milk and tea, are mostly water, too. A person needs water every day...
Humans are unique among primates (灵长类) for our bodily hairlessness. In fact, only a handful of the 5,000 or so mammals — mostly species living in water such as whales and walruses (海象) — are not covered in heavy fur. Now, a controversial (有争议的) new theory suggests that ...
(3.4 kg), and the placenta and fluid together weigh another 3.5 lb. The remaining weight that a woman gains during pregnancy is mostly due to water retention and fat stores. Her breasts, for instance, gain about 2 lb. in weight, and she gains another 4 lb due to the increased blood ...
Humans are unique among primates(灵长类)for our bodily hairlessness. In fact, only a handful of the 5,000 or so mammals-mostly species living in water such as whales and walruses(海象)-are not covered in heavy fur. Now, a controversial(有争议的)new theory suggests that human hair...
We can make a very good estimate from the fossil record that humans probably evolved naked skin around a million and a half years ago and meanwhile they mostly lost their coat of fur. 2019年6月六级真题(第一套)听力 Section C You see, humans are still allowed on Santa Cruz Island, and ...
2.All the common families can afford to buy one.It controls mostly by itself,so it is very easy to operate. 3.It is convenient to carry,for it is small and light. 4.Once you have one of this kind,you’ll enjoy it very much. 5.There are many kinds of food served in t...
There is a big puddle of water behind our house that the little humans play in. I try to join them but they splash me, and I get scared. It smells funny and there are things living in there that must really like being wet because they never come out. I try to catch them but they...
A fair look at the evidence shows that humans are optimized for eating mostly or exclusively plant foods, according to the best evidence: our bodies. We're most similar to other plant-eaters, and drastically different from carnivores and true omnivores.1,2,3 Those who insist that humans are...
The dynamics are, of course, totally unfamiliar, and viscous damping seriously confounds underwater simulation. A unique haptic simulator called Charlotte (after the spider of the same name) helped to augment the visual simulation (Figure 5.5). It was a real but very light two-foot cubical ...
[中考英语上期中考模拟] Humans are the only animals to eat chilies, even though they sometimes cause us discomfort. Many of us have had this experience: We eat something very spicy, our mouth burns, then our nose gets runny and our eyes start to water. So why exactly does this happenAll...