Food from the air
Everyone has seen plants growing, but have you ever thought
First, he dried some soil, put it into a pot and weighed it. Next, he weighed a small tree, planted it in the pot and added rain water. Then, he watered it
After five years, he removed the tree from the pot and weighed it again. He found that the tree had gained
We now know that plants and trees make their own food. Their leaves, when exposed
In today’s Science class, we learnt that human beings have five senses. Our teacher, Mr. Smith, asked us to find out
Some plants can see the light from the sun, and grow towards
It
I never
Chrysanthemum(菊花) comes from China and was recorded in some Chinese books as early as the 5th century BC. The flower
The flower has been favored by
Chinese people
As we head towards midwinter all seems quiet in the garden, but now is the perfect time for
The most
If you want something
Finally, if bright
It is not a secret
The discovery
The
They began by cutting 1.5-inch-wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood’s filtering ability by pouring water containing red dye particles of different sizes through. To their