Question

give reason ... urine is slightly thicker in summer than in winter

Answer 1

Due to more perspiration in Summer , there's more water loss from our body . As a result of this, kidneys reabsorb more of  water in order to maintain water balance in body leaving more concentrated urine. Thus urine is thicker in winter than in summer.

Answer 2

Answer:urine is slightly thicker in summer than in winter since lot of water dehydrated from our body only in summer