Evolutionary biologists have long pondered the phenomenon of the changing colours of autumn leaves. It's possible that the red pigments are manufactured in the leaf as a side-effect of something else that's happening at this time.
A root, a stem, a leaf, some means of capturing sunlight and air and making food - in sum, a plant. The green substance of this earth, the chlorophyll, is all summed up in the plants. Without them we perish, all of us who are flesh and blood.
Yet the leaf is the chief product and phenomenon of Life: this is a green world, with animals comparatively few and small, and all dependent on the leaves. By leaves we live. Some people have strange ideas that they live by money. They think energy is generated by the circulation of coins. Whereas the world is mainly a vast leaf colony, growing on and forming a leafy soil, not a mere mineral mass: and we live not by the jingling of our coins, but by the fullness of our harvests.
I love kale.
In plants, vitamin K is found principally in all kinds of green leaves; leaves which have grown in the dark and therefore have not formed chlorophyll are poor sources.
Leaf! you are so big! How can you change your color, then just fall! As if there were no such thing as integrity!
I'm a huge kale fan.
Research is a scientific activity dedicated to discovering what makes grass green.
With the exception of autotrophic bacteria, the green, or chlorophyll-bearing, plants are the only living forms on this planet capable of synthesizing organic matter out of inorganic elements and simple compounds.
Look, Sage. I don't know much about chemistry or computer hacking or photosynthery, but this is something I've got a lot of experience with." I think he mean photosynthesis, but I didn't correct him. "Use my knowledge. Don't let it go to waste.
Green, the color of growth, or surgent life, enwraps the land. New green, still as individual as the plants themselves. Cool green, which will merge as the weeks pass, the Summer comes, into a canopy of shade of busy chlorophyll.
I wish they would use English instead of Greek words. When I want to know why a leaf is green, they tell me it is coloured by "chlorophyll," which at first sounds very instructive; but if they would only say plainly that a leaf is coloured green by a thing which is called "green leaf," we should see more precisely how far we had got.
Green, red, and mixed shades of haemins are known. If magnesium is replaced by iron in chlorophyll, green haemins are obtained. Their colour is due to a strong band in the red which is already recognized in chlorophyll.
Raw leafy greens contain only about 100 calories per pound and are packed with nutrients.
Curiously, light-loving green plants reject the Sun's green light, reflecting it back at you, which is why they look green.
For the forest to be green, each tree must be green.
And when you take something like the changing colour of autumn leaves and start to ask why, you're starting off on an intellectual journey which will take you beyond that moment of visual satisfaction, while robbing nothing from that experience.
Algae are such basic, simple organisms.
A living tree is a changing, sleeve shape, a wet, thin, bright green creature that survives in the thin layer between heartwood and bark. It stands waiting for light, which it catches in the close-woven sieves of its leaves.
Como se reparten el sol en el naranjo las naranjas? How do the oranges divide up sunlight in the orange tree?
Adding chlorella and chlorophyll to your smoothie gives you the benefits of leafy greens in their most raw form.
I knew, of course, that trees and plants had roots, stems, bark, branches and foliage that reached up toward the light. But I was coming to realize that the real magician was light itself.
Green vegetables are something that fascinate chefs; the ability to keep vegetables green. How do we keep them green? What makes them green? Why are they green? And then that sort of army green. Why do they go from bright vibrant electric green to army green, and how can we avoid that?
To me, nothing else about a tree is so remarkable as the extreme delicacy of the mechanism by which it grows and lives: the fine, hair-like rootlets at the bottom and the microscopical cells of the leaves at the top.
