I don't think it can. If you can think about a specific case where it does, or where it seems to do so, ask a more specific question, for further analysis.
Yes.
Sorry, you can't.
No problem. Without mass, gravity has no effect anyway.
It means a lump of something, often a tumor, is pressing tissues.
The mass of a solid is the amount of matter that it has that determines its heaviness without the effect of gravity. Its standard unit of measurement is kilogram.
No, you have to complete the whole main story mode and depending on what level your at you'll start off with some xp in mass effec 2
If he died in Mass Effect 1 then he is not in Mass Effect 2. If he survived Mass Effect 1 he shows up in Mass Effect 2 but he can not be killed.
Something that is 'sustained' lasts (prolonged for an extended period or without interruption) - therefore a sustained effect would be an effect that lasted.
The effect of mass extinction is extinction, death of a mass
Yes, there will be a Mass effect 3. even if your Shepard died, there will be a mass effect 3.
There is no (useful) official info on Mass Effect 3 yet as ME2 only came out earlier this year. Yes there is, in fact, if you get the Mass Effect 3 demo, there will be automatic Gold Xbox Live to allow you to play online without paying for it. It ends March 5th though.
mass effect 2 will be