Free GED SCIENCE Exam Braindumps
GED Section 3: Science Questions 66–70 (page: 15)

Making products from recycled materials, such as aluminum cans, glass, and plastic usually saves energy and other resources. For example, it takes about 75% less energy to make steel from scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a process that also results in the production of some pollution.

The chart at the left shows the energy savings from recycling.
When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a plastic jug, a juice box (paper), or foil-covered juice container.
If Anil's community requires that he recycles, which container would provide the MOST overall energy savings?

When choosing an organism to study, geneticists prefer the following characteristics. The organism should be small, have a fast growth rate, and have the ability to produce many offspring.
Based on these criteria, which plant would be LEAST useful for a genetic study?

According to the bar graph, in 1997, the use of which energy source(s) most closely paralleled the use of coal?

Wheat is the staple cereal for most of the world. Flour is made from the kernel of the wheat plant. The kernels are first separated from the plant stem and then broken apart by the milling process. The husk, the outer layer unusable for most purposes, is removed.
The wheat kernel (whole grain) has three main parts: germ, bran, and endosperm. The germ is especially rich in vitamin E, niacin, and riboflavin. The bran, a protective coating around the kernel, is also a rich source of nutrients and fiber. The endosperm, making up 83% of the kernel, is the soft inside portion containing starch and proteins.
Although the enrichment of white flour restores some of the lost nutrients, there are some vitamins and minerals that are lost in the refining process and not replaced. A valuable source of fiber is also lost.
Ling reads an article that states that many people don't get enough fiber in their daily diet.
Which type of bread would be the best to recommend to Ling?

Which of the following statements would explain why some objects feel more solid to the touch than others?