What Is a Fossil?Panos ValavanisAkritas
What is this? It's a fossil. How old is it? It's millions of years old. 1. **存在性判断**:题目中明确包含完整的问答形式,如"What is this?"对应"It's a fossil",以及"How old is it?"对应"It's millions of years old",因此答案存在。 2. **完整性判断**:两个问答均明确给出...
In the morning.I went to the fossil.It had changed again!This time it looked like a sheep. No one had seen or heard anything on their watch. How and why did it keep changing? To this day, no one has found the answer to the mystery, but it is very interesting to see what creatur...
FEMALE PROFESSOR:Well, I mentioned before that the archaeopteryx fossil was found in a quarry—you know, where people cut stone—in this case, exceptionally fine-grained limestone. And the point is… the particles that this limestone was made of were so fine that the limestone preserved much ...
The bones of this ichthyosaur are a type I Fossil. These crinoids represent a type I fossil So now you have one short and one long answer to the question: "What is a Fossil?" Let's build on that. Type II-Something that was made by the animal while it was living that has hardened...
.The number of U.S. landfills is dropping.The country had 6 , 300 open landfills in 1990 .By 2011 , it had only 2 , 300 open landfills . The new landfills are bigger and better , but the trash has to travel farther to reach t...
Paul and I continued to look at the fossil closely. It seemed that the creature (生物) was smaller than a human, and could stand on two legs.The next morning, I ran to the fossil. The fossil was different! Now it looked like a small bear....
【题文】“What is that?” “It looks like a fossil (化石).” “It looks part-human.” “It can’t be...” The words “animal” and “human” were discussed by the archaeologists (考古学家). “What if (要是……会怎么样呢) it’s neither human nor animal? What if it’s someth...
Stages of fossilisation The soft parts of the animal decompose, leaving the hard skeleton behind. Layers of sediment build up on top of the skeleton. As more and more layers build up, the pressure on the lower layers increases, and they start to turn into sedimentary rock. ...
Fossil stone By Suffolknewb May 24, 2024inFossil ID Share More sharing options... Followers1 Suffolknewb New Members 5 PostedMay 24, 2024 What is this, We have no idea , found on Suffolk beach Fossildude19 Administrator 46.3k Location ...