1. Where do you interact with all four of Earth’s systems?

1. When you throw away trash, it is taken to the landfill where it can decompose, or break into smaller pieces. Which of the following items is likely to take a long time to decompose?

1. When a material _______________________ it is broken down into smaller pieces.

_________________________ is the wise use of material and energy resources so we do not run out of them.

Taking materials from old discarded objects and making new objects from them is

Why is it important to dispose of electronic devices properly?

All foods that you eat comes from either plants or animals, which is the _________________.

An area of land or water that is set aside to protect wildlife.

The ____________________ is all the water found on Earth.

The __________________ is all of the living things found on Earth.

The ________________ is a mixture of gases that surround Earth.

The ___________________ is rock, soil, and sediment on Earth's surface.

Countries can pass laws to ___________ Earth's systems.

Some ways to protect Earth's systems is

Water bottles are ________ for the environment.

Engineers have developed new scrubbing technology that removes dangerous chemicals from smoke made by factories. Some businesses or communities choose NOT to use the new technology because it is _________________ to install and use.

Water bottles take ___________ years to decompose.

1. Your local government wants to create a law or program that protects the atmosphere. Based on what you know about Earth’s systems, which of the following law or program should you suggest to help the atmosphere?

Dishwashers use less water and energy than hand-washing dishes in the sink. Some dishwashing detergents contain phosphates, a chemical that pollutes lakes and rivers and harms the biosphere. Soaps used to hand-wash dishes do not contain phosphates. Which of the following would protect Earth's system?