"Silver Birch Forest" PPT courseware

Description

"Silver Birch Forest" PPT courseware

Birch: Birch, a common tree in the northern hemisphere. The birch family also includes alder, hazel, hornbeam and hob-leaf ironwood. The birch is an elegant tree often planted in parks and gardens. They have small catkins (catkin-like flowers) with no petals. The fruit is a small nut.

The bark is mostly smooth and mostly peeled off in thin layers. The leaves are simple, alternate, usually with glandular points on the underside, the edges are heavily serrated, rarely single serrated, the veins are pinnate, and there are petioles. Flowers unisexual, monoecious. Catkin inflorescences, male inflorescences with 2 to 4 clusters, usually 2 stamens, filaments short, forked at the top; female inflorescences with 1 or 2 to 5 stamens on the top of short branches, cylindrical, oblong or nearly spherical. The nut has membranous wings, the fruit bracts are leathery, and the apex is 3-lobed.

Silver birch forest, the home of beavers, strong reindeer coming and going, the lake water is clear, I am here again, puffy, puffy, puffy, puffy, puffy

Far away in the dense forest, deep in the earth, I cheered to the hills to the north. The lake water was clear. I came here again, puffy, puffy, puffy, puffy.

A tent was set up on a nearby rock. There was no sound in this place in the water town, and the lake was clear. I came here again, puffy, puffy, puffy, puffy, puffy.

Birch wood is hard, elastic, has a uniform structure, and the heart and sapwood are not obvious. It has poor corrosion resistance and is easily deformed by moisture. It can be used as plywood, scrolls, gun stocks, joinery furniture and farm tools. Birch bark can be pyrolyzed to extract tar and can also be used to make handicrafts. In addition, its tree shape is beautiful and its leaves turn yellow in autumn, making it a good landscaping tree species. Birch extract is used as a natural fragrance or leather oil, and in cosmetics. Birch sap is drank as a supplement or returned into birch syrup, soft drinks, and other foods. Birch syrup is however very difficult to compare to other syrups, making it more expensive than other food syrups.

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Update Time: 2024-08-06

This template belongs to Music courseware Fourth Grade Music Volume 1 industry PPT template

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