The top part of the leaf has more chlorophyll than the bottom.
There is more chlorophyll in the top of the leaf than there is on the bottom
only after chocolate milk ;)
Sunspots look darker because they are cooler than the rest of the sun.
because of rotation of earth
i think that indigo is lighter than violetNo sorry, I think indigo is darker than violet. Indigo is approximately 5 parts blue to 1 part red. The basic violet is 1 part blue to 1 part red.
This is because they are cooler.
Because light receiving part has more chloroplasts in the palisade cells hence the upper part is darker green.
Usually, yes. But a darker shade on the top lashline than the bottom one - black on top and brown on the bottom, say - looks good too.
A sunspot is a part of the Sun that is cooler, and therefore darker, than the surroundings.
Darker than Amber was created in 1966.
Darker Than You Think was created in 1940.
Yes tan is darker than beige.