Аlexandr
One difficult question is. Is there a difference between following sentences:
1.Cold wheather will kill certain plants.(modal verb 'will' is for the present, for inevitable ivents)
2.Cold whearher kills certain plants.
I just don't understand. In second sentence it's like a fact, it killed in the past, kills now, in it kills in the future. But maybe in the first sentence it means exactly the same?
Depends on context.
There are at least 3 meanings of the first sentence:
1) If this spring will be cold, some plants we have in our garden would not survive it.
2) If average temperature on Earth will be lower, some plant species would vanish.
3) Some power plants like hydroelectric ones will be inefficient and closed due to lower temperature that causes freezing the water they use =))
4) This is fkcing cold out there, close that window or our beloved roses will die! (well, that's really close to the 1st one).
The second one has more general meaning.
Anyway, they aren't the same. Lacking context, I'd say the first one means our garden problems and the second one is about plants in general.
And 'will' isn't for present here.