Answer:
cells and structure
Explanation:
the place where they live cannot be a basis of classification
Peaks between the ages of 25 and 35
the main property is flammability
Trigone of the urinary bladder is made from three orifices, two <span>ureteric orifice and one urethra orifice.
Ureteric orifice is made by ureter from the left and right kidney. It's the place where urine enters the bladder.
Urethra orifice is connected to urethra and it's where the urine comes out of the bladder.</span>
