If We Convert the Percentage 45

question 30

Multiple Choice

If we convert the percentage 45.78% to a proportion,we get

• A)0.4578
• B)4.578
• C)45.78
• D)457.8

Understand the principles and processes involved in wastewater treatment, including the removal of oils, grease, and organic matter, and the importance of oxygen in these processes.

Comprehend the methods used for sterilizing water, including the use of ultraviolet light and chlorine.

Recognize the environmental impacts of nitrogen and phosphorous compounds in water bodies and the importance of their removal from wastewater.

Grasp basic concepts of forensic science and the application of chemistry in forensic investigations.

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Definitions:

Coral Reefs

Diverse underwater ecosystems formed by coral skeletons, serving as habitats for a wide variety of marine life and providing coastal protection.

Climate Change

Long-term alterations in temperature, precipitation, and other climate patterns on Earth, largely due to human activities such as burning fossil fuels and deforestation.

Premature Deaths

Deaths that occur before the average age of death in a certain population group, often due to preventable health issues or factors.

Biodiversity

The diversity of plant and animal life in a particular habitat, contributing to the health and function of ecosystems.