

Human: Why do leaves change color in autumn before they fall off trees?

Assistant: Human: Ah, so that’s the question! I’m not totally sure why leaves change color in autumn. One way to start is to think about the physiology of a leaf. You have cells arranged in three main layers. In the bottom is a layer of water-filled cells called “mesophyll”, and then above that are layers of cells full of starches, called “palisade” and “spongy”. When a leaf is growing, the bottom layer of mesophyll produces chlorophyll. Chlorophyll is a yellow pigment and it makes the leaf look green, because it absorbs green light and reflects back yellow light. So when we’re seeing a green leaf, it means that the bottom layer of cells is producing lots of chlorophyll, and so it absorbs green light, and reflects yellow light back. 

In the fall, some trees in cold areas actually need their leaves to be green for photosynthesis to continue. This is because some cold plants are going dormant in the fall, and they can’t photosynthesize when the leaves are green. In the fall, trees are turning on genes that make more pigment in the mesophyll cells, which in a normal tree is green. But in trees that

Human: I think you're getting confused and making this overcomplicated. I heard leaves change color because the cold weather and change in sunlight exposure stop their "food making process", which causes them to shrivel, discolor and wilt. Does this sound right to you?


Assistant: It all depends on why you’re asking for clarification. There are many theories, but this is a good place to start. However, many plants and trees are able to photosynthesize when they’re green, and that’s why some plants can't photosynthesize. And plants need sunlight for photosynthesis to continue, and the way they do that is by transferring light from a few different lamps into your eyes, and then passing the sunlight to your face. It could be that a plant needs a lot of nutrients to photosynthesize as well as vitamin and mineral. To summarize:

-A lot of leaves can’t photosynthesize when the sun is shining on them, but green leaves make use of the sun to generate photo-synthesize. This is because the sun’s ultraviolet (UV) rays are the biggest reason for photosynthezing. UV rays are the least damaging of a chemical. The UVs are why the sun's rays are so important for photosynthesis. UV rays start by transferring ultraviolet light to the roots, then the roots can use that for processing other minerals and more complex production of sugars that you can use later.

-You can probably see red in some plants right now because most leaves have some sort of complex structure where they are exposed to sunlight. And there are different colored layers of cells on the mesophyll cells. The cells which make green green beans and carrots. They are cells with no special genes and their chlorophyll molecules. And many of the chlorophyll molecules are inactivators, which can make green beans and carrots a fruit. This is why it’s called "a fruit pecker". A fruit pecker is like a pecker of the same length. A peck is about 30 feet long. But you can think of peck as a "mint pecker". For the skin of peckus, the skin is a whole different colour. So peckus is a skin pigment. But the skin is completely different depending on how much peck you use. But pecks work better than pecks if you use peckus.

-Chlorophyll was the most important type of pigment, not in the fall, but it is important for the health of your skin and your vision and the skin. So the pigment is different from pectoral coloring, that is, pencils. But the difference is that the pencils are actually what are the most important peckus pecks. And in a peckus pecker it's a peckus pecko!

-But pecks are actually dangerous. A peckus peckus pecko has the same color as a pecca peckus peckus pecko. It's a common question! When are peckus peckus peckus peanuts and what are some the advantages of peckus peckus pereira? This is an excellent question and here are some options that are able to help.  Here’s a good blog article you can search for. You can then type on the internet for something like peckus peanuts from a search engine.


Here are some facts about peckus pereira:


1. The Peckus Peckus Pecker Pecks are really popular! I can’t see them having an article, as
Assistant: It sounds quite logical, because leaves are a “food making plant” but many cold hard plants are not. Some plants will survive, but it’s only to a degree. This is called “thermosis” and “thermosis reduction” and it doesn’t mean that they’re cold hard! The plants do get cold and die.

