Why Do Plant Leaves Turn Brown In Fall Vintage Ad Trade Card

Description

Why Do Plant Leaves Turn Brown In Fall Vintage Ad Trade Card
NOTE:
THESE ARE NOT POSTCARDS
THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE MUCH SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE CARD DIMENSIONS ARE APPROXIMATELY
3 '' x 2 1/4 ''  or  7.7 cm. x 5.4 cm.
ORIGINAL VINTAGE  TRADE - ADVERTISING CARD
WHY DO LEAVES TURN BROWN?
The many delightful shades of green of
the leaves of different trees and plants
are, to a large extent, due to the green
colouring-matter, or pigments, in those
leaves. This colouring matter is called
chlorophyll. With the help of this substance
each leaf acts as a small food factory for
the plant, producing from air and water
nourishment essential to proper growth.
Each such factory can work only if it
receives enough sunlight and warmth. As
autumn comes, with its colder, darker days,
each chlorophyll factory works less and
less and other pigments (red, yellow, etc.)
take over. This change turns the leaves to
those beautiful autumn tints.
THE CARD DIMENTIONS ARE APPROXIMATELY
3 '' x 2 1/4 ''  or  7.7 cm. x 5.4 cm.
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE CARD
TO SHOW THE DETAIL.
THIS CARD IS NOT A MODERN REPRODUCTION - IT IS AN ORIGINAL
IT IS NOT PERFECT
THERE MAY BE:
PAPER LOSS - SMUDGING - ROUNDED CORNERS
SEE IMAGES ABOVE!
20
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ON LARGER INTERNATIONAL ORDERS WE MAY REQUIRE REGISTERD
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