Wing’s of butterfly’s are unique
It’s ability to change its form.
I think the correct answer from the choices listed above is the last option. The control group to be used to test the hypothesis would be the swallows with average-length tails. A control group <span>is defined as the </span>group<span> in an experiment or study that does not receive treatment by the researchers.</span>
Answer:
Heat causes liquid and frozen water to evaporate into water vapor gas, which rises high in the sky to form clouds.
Explanation:
DNA and Vaccines work by injecting a small dosage of the virus so your immune system already knows how to react.
