Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators. Which group is the control group? Experimental group?

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

Nh3 +02-no + h20 is unbalanced what is the balanced equation

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?