What are the roles of the two test groups in this investigation? A. Both are experimental groups, and each individually shows the effect of the direction of light. B. One is the experimental group and one is the control group, and together they show the effect of the direction of light. C. Both are control groups, but only Test Group 1 shows the effect of the direction of light. D. Both are experimental groups, but only Test Group 1 shows the effect of the direction of light.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

anthropod traits:

a well-developed collarbone

rotating shoulder joints

partially rotating elbow joints

opposable thumb

similar dental formula