Scientists have proposed several theories to explain dinosaurs' extinction. There's not much physical evidence for some of them. For example, one theory is that dinosaurs were allergic to flower pollen — flowering plants and bees evolved together during the late Cretaceous period. However, flowering...
1. True or false: Vedic astrology tends to focus on the role of the sun, whereas Western astrology places much more emphasis on the moon. False. Western astrology tends to focus on the role of the sun, whereas Vedic astrology places much more emphasis on the moon. Learn More: How Is ...
But there is one frog that is different from other frogs. It is the wood frog.为答案提示。 2."How are frogs (青蛙) different from us?"the teacher asked. The class was happy to tell the teacher.为答案提示。 3."How can a frog wake up from a frozen sleep?"asked the class."How ...
As little as 0.25 micrograms of LSD per 2.2 pounds (about 1 kilogram) of body weight causes trips, and that's a fairly standard modern dose. In the 1960s, users commonly ingested four times as much. When a person takes LSD, it's quickly metabolized in the liver and eventually excreted...
but this was terrifying. the goal was simple. spend 30 days off technology and observe what happened. i’ve never been much of a journal keeper, but it suddenly felt like a fun little science experiment. the first few afternoons, it was all i could do to fight the spiraling pull...
and the propulsion force is enough to cover the weight of the divers and the whole diving equipment, and at the same time, it will sink in water. If the frog shoe floats, it will offset some of the strength of the foot kick down the shoe and cause the waste of physical strength. Be...
Memorability has to do with the ability the line has to be recalled unaided. A lot of this is based on the brand heritage and how much the line has been used over the years. But if it is a new line, what makes it memorable? The big idea should be told in the advertisement. The ...
but it can make you feel like the Moon is nearly as big as the Earth itself. In reality, though, the Moon is just a little less than one-third of the diameter of the Earth and a mere 1.2% of the Earth's mass. That's not very much, but it's actually pushing the limits of h...
Yet as ubiquitous as earthworms are, there is much we only recently have come to learn about them. In some northern regions of North America, there are no earthworm species around just a few hundred years ago. That's because during the last ice age, most earthworm species native to North...
energy, so I was too tired to do much afterwards.The new exhibit at the museum is very absorbing, and is getting lots of compliments from visitors.We need something more absorbent than this paper to clean up the water on the floor.