help????anyone that is up to it?

Question

plz ppl help me with this:
1-do snakes that spit venom kill more prey and therefore grow bigger?why?
2-explain cosmos,universe, and galaxy and how r they related to each other?what is their relative size from biggest to smallest?
3-what is jet lag?and why do u have to reset ur watch when traveling to europe?


plz plz help me anyone that is up to it answer plz
if u r not gonna answer then don't even bother

Answer 1

#2 Cosmos = Universe = either the observable part of space, the observable part of space-time or the entire space-time. Galaxy = a massive, gravitationally bound system that consists of stars, an interstellar medium of gas and dust, and an unknown dark matter.

Relation to each other is galaxies are found in the universe.

Sizes: Universe - Very little is known about the size of the universe. It may be trillions of light years across, or even infinite in size. A 2003 paper[17] claims to establish a lower bound of 24 gigaparsecs (78 billion light years) on the size of the universe, but there is no reason to believe that this bound is anywhere near tight.
Galaxies: There are probably more than a hundred billion galaxies in the observable universe.[4] Most galaxies are a thousand to a hundred thousand[2] parsecs in diameter.

All sourced from http://www.aoe.com.au/astronomical_glossary.html
and wikipedia.

Answer 2

#3 jet lag is the feeling you get when traveling out of your own time zone.... if you travel from the USA to Europe, you are going ahead in time, and need to adjust your watch or you will be on the wrong time until you return to your own time zone. when you travel long distances, often you think it is time to sleep when it is day or awake when it is nite, because time is different in each zone. (google Time Zones to get an idea of what they are)