Ritika observes that her father before storing the grains always dries them under the Sun. What is the likely reason for this activity?
(a) To keep the grains warm.
(b) To increase the size of the grains.
(c) To prepare the grains for germination.
(d) To reduce the moisture content of the grains.

to reduce the moisture content of the grains.

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.