The picture represents the excretory system.
which is represented by the x?
nephron
ureter
bladder
urethra

I think it's that it's ureter

Ureter

Explanation:

Ureter can be defined as the structure which is a part of excretory system of the body. They are made of smooth muscle fiber that functions by propelling the urine from the kidney to the urinary bladder.

It is usually 25-30 cm long and 3-4mm wider in the dimensions.It is lined by the urothelium which is a type of transitional epithelium and an extra layer of smooth muscle that favors the peristalsis.

The correct answer is option B

answer; ///as energy flows through an ecosystem,energy (decreases) at each

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.