The uterine contractions during the birth process serve two central functions—one is dilation. The other is

A research study that does not have random assignment can still be an experiment if there is a proper control group

a. True b. False Indicate whether the statement is true or false

Which of the following is not an ethical principle that researchers must adhere to when conducting research with animals?

A. Animals must be treated humanely and in accordance with the law. B. Researchers are responsible for ensuring the health and comfort of the animals. C. Researchers must promote the animals' psychological well-being. D. Animals must not be harmed regardless of possible scientific advancements.