Question

1. why is recycling important for the environment?
2. list the three main steps of the water cycle.

section 4: scientific method & skills

1. put these steps of the scientific method in the correct order: (a) analyze data, (b) ask a question, (c) draw a conclusion, (d) form a hypothesis, (e) test with an experiment.
2. why is it important to include a control group in an experiment?
3. in an experiment testing how sunlight affects plant growth, what is the independent variable?
4. convert the following: 100 cm = ______ m

section 5: human body systems

1. name one system of the human body and explain its main function.
2. which body system includes the heart?
3. name one organ in the digestive system.

Explanation:

15.

Recycling reduces waste in landfills, conserves natural resources, and decreases energy - use and pollution associated with making new products from raw materials.

The water cycle involves evaporation (water turning to vapor from bodies of water), condensation (vapor forming clouds), and precipitation (water falling as rain, snow, etc.).

The scientific method starts with asking a question, then forming a hypothesis, testing with an experiment, analyzing data, and finally drawing a conclusion.

Answer:

Recycling reduces waste, conserves resources, and decreases pollution and energy - use.

16.