A biologist wants to know how the absence of a certain mineral nutrient will affect the bone growth of a laboratory rat. The biologist performs the following four experiments. Experiment 1: Feeds the rat 100 mg of the nutrient a day, and measures bone growth over 30 days. Experiment 2: Feeds the rat 50 mg of the nutrient a day, and measures bone growth over 30 days. Experiment 3: Feeds the rat 25 mg of the nutrient a day, and measures bone growth over 30 days. Experiment 4: Feeds the rat 0 mg of the nutrient a day, and measures bone growth over 30 days. Which is the control experiment? A. E1
B. E2
C. E3
D. E4

E= Expirement

Janel’s class studied properties of matter and how matter can change. janel decided she would do an experiment mixing baking soda and vinegar. question: describe the properties of baking soda and vinegar, and explain the changes that janel should see when she mixes the two types of matter. •first, identify the physical state of matter of baking soda. describe another property of baking soda. •next, identify the physical state of matter of vinegar. describe another property of vinegar. •then, explain what janel should see when she mixes the baking soda and vinegar. •describe the states of matter of the new materials that are formed. •explain how janel can be certain a change has occurred. me

What is the molar mass of potassium nitrate, kno3

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world