Answer:
Two ureters.
These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.
Explanation:
Hi the answer is circumstantial-situational drug use. Hope this helps.
Answer: Testable Question
Explanation:
- testable questions are always about
changing one variable to see what the
effect is on another variable.
- Can be answered through
that involve experiments, ,
or surveys
, investigations
, observations
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