blackberries
Brambles are blackberry bushes and the fruit can be eaten raw. The bramble is made up of long arching stems with prickly thorns. There is also a US version of the bramble that does not grow thorns.
the only way to truly get rid of bramble is to cut down and burn the top and dig the roots up and burn those too. its hard work but it's all that works.
Blackberry preserve, (aka jam or jelly) is often called 'Bramble' jam. I believe this is to give a rustic, home-made feel to the prospective purchaser. You often hear blackberry and apple pie referred to as 'Bramble and Apple Pie'. I think the term bramble is used to refer to the fruit of wild blackberry bushes which are often found on waste-ground or in hedgerows, whereas the fruit of cultivated or farmed bushes is simply called 'blackberry'.
they live in bushes
No, there aren’t rose bushes in the grasslands.
Rats can live basically anywhere, so providing there's food to eat, yes, they can live in bushes.
No
in thick bushes
Yes
in bushes
in nests and bushes