I need a hypothesis for this question, I'm trying to understand this and what to write down: In the study of salamanders the researcher decided to further investigate the effect water quality had on the salamanders survival. State a hypothesis that may be used in such a study.

If you answer this i"ll give you brainiest and all these points me if you do i love you 7. a doctor is at work taking care of sick patients. she spends a few minutes trying to figure out why a particular patient is sick. she taps the patient's knee to test his reflexes. while she is examining him, the patient coughs on her. a) describe the function of the skeletomuscular system in this situation. (3 points) b) describe the function of the circulatory and respiratory systems in this situation. (3 points) c) describe the function of the immune system in this situation. (3 points) d) describe the function of the nervous system in this situation. (3 points) e) describe one way that any two of the doctor's body systems worked together in this situation. (3 points)

What do animals wth echolocation have in common other than echolocation

List two modern organisms that have pentameral symmetry