Question

Why is concentration of urea higher in urine during summer?

Answer 1

the concentration of Urea is higher in urine during summer season because lots of water that makes urine dilute is being utilised and loss in the form of sweat

Answer 2

In$\textbf{ Summers }$ water consumption is increased and as compared with it excretory amount of urine is less.

Most of the water actually evaporated via sweat in summer.

It keeps our body cool and hence concentrated yellowish urine is excreted.