Answer: worms have no hard parts
Explanation:
A fossil is a hard remain of the dead being which used to live on earth. It may belong to plant, animal or any other creature who used to have hard body parts such as teeth, bones, shells, wooden parts and others. As when the organism dies the soft body parts are decomposed off and only hard parts are left. These hard parts are preserved under the heap of earth in the sedimentary rocks as fossil.
The worms usually have soft body parts which can be easily decomposed off by the soil microbes after death. Hence, they cannot be preserved as fossils.
The reason they have to be so accurate and precise is because, let's say you were doing a lab or something that was involving chemicals. If you had to put a certain amount of chemicals in your experiment, but when you were doing to the math, you messed up and didn't go back and even bother to fix it, that is a really BIG issue. Because something will probably happen to your chemicals because you might have added to much of something into it. So that's why you always have to be so precise and accurate!
The grass gets nutrients from the rain and sun.
A cow eats the grass. You eat the cow.
Water has a very high specific heat. This means that it requires a large amount of heat to raise the temperature of water.
The reason why it has this property is due to water's hydrogen bonding.
There should be many anatomical similarities among verities and species that have diverged from a common ancestor