The correct answer is <span>a. fibrous carcinogen. </span>
Answer: D.) Plant D
Explanation: A control group is composed of the test subject(s) that do not receive any experimental treatment. In this case, Plant D is the control group because it does not listen to any music unlike the rest of the plants.
Answer: The blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen, and life support from the mother through the placenta.
Explanation:
<span>c. they secrete hormones that help control the ovarian cycle.
</span>
Answer:
B
Explanation:
The soap brands cultivated less bacteria culture than the warm water and hand sanitizer.