1) Well, models are vital to use by scientists, because that way they can represent visually and help other people understand the point they are trying to stress about their project. A simple example would be to use a Bohr model to represent a specific chemical, and along with that show how many protons or neutrons does it have.
2)In science a universal law is a statement by which a particular action or a phenomenon would occur ALWAYS in the same way, and will ALWAYS abide to what the law states, while a theory is a guess on what kind of pattern does a particular phenomenon or experiment abide by.
3)The SI units are units of the metric system, and are used everywhere in the world for specific measurements, the kilograms is used when measuring mass, the meters is used when measuring length, the liter is used when measuring a volume of a liquid, and finally the cubic meters or m3 are used when measuring the volume of a solid. and those are the standards as well.
I believe it is option "D.) The flu vaccine is not reliable enough to be worthwhile"
It would have a negative impact on the economy due to people not spending money to have the flu vaccine.
Full of excitement, today was an excellent day, up until I got into a huge argument with my friend, while I kept a gentle temperament he/she did not do the same.
In the poem "I Wandered Lonely as a Cloud" by William Wordsworth, the author compares the daffodils that he is seeing to stars. He tells us that the daffodils looked like stars on the milky way. Moreover, he personifies them by saying that they were "tossing their heads." The mood that is created in the text is one of happiness and relaxation.
<em>Continuous as the stars that shine</em>
<em>And twinkle on the milky way,</em>
<em>They stretched in never-ending line</em>
<em>Along the margin of a bay:</em>
<em>Ten thousand saw I at a glance,</em>
<em>Tossing their heads in sprightly dance.</em>
