Well there are many catastrophic scenarios that we already overcome. You should consider educating yourself about the great filter. A great filter is a hypothetical barrier that each civilization can or cannot overcome. From here on things get a little complex so I won't bore you with them. But there are experts in this theory called great filter and I'm sure they can tell you a lot about.
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A hydrogen bond forms from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom.
What year or grade ur in?
The earth equator since all the rays coming from the sun are perpendicular to the equator rather than the restaurants of the Earth.
