PLEASE HELP You must design a valid experiment to show that there are microorganisms in the air. What would be your dependent va
riable? (Points : 2) sterilized broth growth of organisms in the broth exposure to microorganisms in the air You must design a valid experiment to show that there are microorganisms in the air. What would be your control group? (Points : 2) open flask with unsterilized broth open flask with sterilized broth sealed flask with unsterilized broth sealed flask with sterilized broth
You can carry out a test , 1- take a sample of the air in a test tube 2-add limewater to the test tube 3- result : if it turns milky/cloudy it has microorganisms 4- reason: because every microorganism respires , and so it produces Carbon dioxide . and limewater is the test to show the presence of Carbon dioxide .
Due to collisions between particles in the spinning cloud, the solar nebula begins to flatten. The particles in the gas cloud first have all different speeds in different directions. As they start colliding with each other, their final velocity is the average of the two initial velocities before collision.
