Answer:
In botany, a stoma, also called a stomate is a pore, found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening.
Explanation:
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Answer:
Natural vs synthetic materials
"Natural" products are made from natural resources, like wood and sand. "Synthetic" products are also made from natural resources. For example, the synthetic material plastic is made from petroleum, which is pumped out of the earth
Over many thousands of years, glaciation has made an impression on the UK's landscape. Today, much of upland Britain is covered in u-shaped valleys and eroded steep mountain peaks. Ice covered most areas. Glaciers eroded and weathered landscapes to create dramatic mountain scenery.
Answer and explanation:
The sun's core is so hot that there is so much pressure that nuclear fusion takes place. Hydrogen is changed to helium and nuclear fusion creates photons (light) and heat.
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