Which method offers the MOST reliable way of assessing whether caffeine consumption boosts athletic performance?

naturalistic observation
experimentation
descriptive research
correlational studies

How can a liquid be drawn into a pipette safely?

If you need to add 27.50 ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?

George went to a dinner party thrown by his company. he was seated with his colleagues when the server bought in the food. the first server put vegetables on his plate. he noticed that the server had put the vegetables in one specific corner of the plate. if the area of the plate was divided in terms of the numbers on a clock, where did the server put the vegetables on george's plate? the server put the vegetables between the and areas of the plate. first blank 12 o'clock 3 o'clock 9 o'clock second blank 11 o’clock 6 o’clock 5 o’clock need