Because they are 'ripe'
they turn black and they get all mushey and they taste gross
Bananas are green, but when they are ripe they turn yellow. When they are rotten, they get brown blotches and eventually turn all the way brown.
because the outer core deserts
Bananas are yellow
Bananas can be yellow, red or purple
bananas are yellow
Bananas star out green and turn yellow as they ripen, that why some people pick them when they're green to make plantains, because yellow bananas are sweet and mushy but the green ones are very firm
They start green and turn 'yellow' as they rippen, they then start to turn brown then black as they get past their best and start to rot. The flesh of a bannana is not yellow but a creamy white.
They start green and turn 'yellow' as they rippen, they then start to turn brown then black as they get past their best.in fact, bananas are a light purple colour skin. the inside is a dark green, but a certain circular in our eye streams make it look yellow. this is same for most fruits, including apples which are either sky blue or a very bright pink. THERE ARE YELLOW, GREEN, PURPLE,
Of course bananas are not pink they are yellow!
Yellow bananas are also green before ripening. There are quiter a few varieties of bananas however and some of them are green.