Before beginning this Lab, read “Lab 1: Introduction to Science” in your Environmental Science Student Manual. This lab includes a video containing several questions and critical thinking activities that focus on the scientific method, lab reporting, and data collection and management. As you view the video, you will be prompted to stop and answer the Exercise 1 questions on the Week One Lab Reporting Form. Make sure to complete all of the following items before submission:

• Read through the introductory material.

View the Lab 1 videos and answer Exercise 1 Questions 1 through 10 in complete sentences on the Week One Lab Reporting Form.

• Video 1 (Links to an external site.)Links to an external site.
• Video 2 (Links to an external site.)Links to an external site.
• Video 3 (Links to an external site.)Links to an external site.
• Video 4 (Links to an external site.)Links to an external site.

Exercise 1: The Scientific Method In this exercise, you will answer the questions based on what you have seen in the videos throughout the lab. Be sure to pay careful attention to the videos – you will not only need them to complete this exercise successfully, but also to have a firm understanding of the scientific method for future labs

1. Make an observation – Write down any observations you have made regarding the effect of pollution on the environment.
2. Do background research – Utilizing the scholarly source (provided here), describe how pollution might affect yeast.
3. Construct a hypothesis – Based on your research from question 2, develop an if-then hypothesis relating to the effect of pollution on yeast respiration
4. Test with an experiment – Identify the dependent variable, independent variable, and the controlled variables for the experiment.
5. Analyze results – Record your observations of the three test tubes before incubation and compare them to the observations provided in the video.
6. 
   

   Test Tube	Initial Appearance
   Yeast with No Pollutant
   Yeast with Salt Water
   Yeast with Detergent

Analyze results – Record your observations of the three test tubes after incubation.

Will post remaining questions and info needed in message to tutor!!!!

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