What is your control setup for the bottom choice chamber? A. I will put cornstarch on one side and fine sand on the other side.
B. I will leave both sides empty.
C. I will put sand on one side and leave the other side empty.
D. I will put sand on both sides.
E. I will put cornstarch on both sides

My control setup for the bottom choice chamber is that I will put cornstarch on one side and fine sand on the other side. Option A is the correct answer

Control choice chamber is device that offers small invertebrates two or more contrasting environments (for example: differing in humidity, temperature, pH) and allows them to move freely into the one they prefer.

Learn more about cornstarch:

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A. I will put cornstarch on one side and fine sand on the other side.

Explanation:

Pill bug are the creature with flat shells and extended legs. They move after analyzing their environment through their antenna. These antenna helps the pill bug to sense the environment and move towards the clean path. They move quickly with the help of their legs. These bugs are attracted towards cornstarch. If pill bugs are attracted to cornstarch they will towards cornstarch chamber instead of fine sand chamber.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?