GED GED-Science Exam With Confidence Using Practice Dumps

Flowers are the reproductive part of some plants. The stamen is the male reproductive organ while the pistil is the female organ. At the tip of the stamen is the anther, which forms pollen grains in which the sperm cells are formed. Pollen grains are transferred to the pistil by wind, water, insects, and other mechanisms.

Which statement best interprets the diagram and information?

Exhibit:

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?

Earth’s atmosphere contains naturally-occurring ozone. Ozone, which contains three oxygen atoms joined together (O3), forms a layer miles above Earth’s surface. The layer serves as a shield from the harmful ultraviolet rays of the Sun.

A group of chemicals called CFCs (chlorofluorocarbons) are used as refrigerants, propellants, and cleaning solvents. At Earth’s surface CFCs are chemically stable. However, CFC molecules can be broken apart high in the atmosphere and they can destroy the protective ozone layer.

Based on the information, which action would reduce the destruction of the ozone layer?