Strawberry growers & black plastic

 I've often wondered when going past strawberry growers why they are
planted in rows & rows of black plastic.  Why do they do this?

L.

 Linda H wrote:

Havent you heard of weeds and keeping the ground warm, and easier,
cleaner picking and maintaince?

 Jonno wrote:

Weeds?  Nah, never heard of 'em.

But yeah, that makes sense and common sense in this instance escaped me.
  Anyway, okay thank you, Jonno.

L.

 Linda H wrote:

Me neither.
Anyway how did the strawberries survive before  human intervention, and
what were they called then?
And before they invented ther rasp, what were raspeberries called, and
before logans hero's what were loganberries called ( er hoganberries?)

 
and do happy people eat blueberries? and what happens if they do?

do old people eat youngberries?

can girls eat boysenberries?

do people with beri-beri eat any kind of berries?!