The filament of an electric bulb is made of tangsten.​

Tungsten has a melting point at around 3400K, which is higher than any metal in pure form. And owing to its low thermal expansion, tungsten is able to maintain its form even when temperatures change drastically. This is why tungsten is used in the filaments of light bulbs.

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income statement is prepared in order to show the profits and loss of a business. in order to prepare the income statement she should collect all the income and expenses of the product with the cost of production.

1   all nations face the problem of scarcity because there are limited resources and unlimited wants. nations do not have enough factors of production to produce everything that their population wants. entrepreneurial resources initiate businesses to make new goods and services; labor resources produce goods and services.

2 there are four factors of production: natural resources, labor resources, capital resources, and entrepreneurial resources. natural resources are raw materials from nature that are used to produce goods. trees, water, and grains are natural resources. some natural resources, such as wheat and cattle, are renewable

3 wants

things that you do not need to have in order to survive, but would like to have

needs

things that you must have in order to survive

goods

physical products

services

tasks that a business perform for customers

resources

items that people can use to make or obtain what they need or want

determine

to settle or decide by choice of alternatives or possiblities

4 i really dont know