21.   One can also follow certain garments through the seasonal changes.

22.   Parties come and go, politicians ditto, but the press is as perennial as seasonal change.

23.   Patches of dark color scattered across the light Martian deserts seem to change in extent and darkness, almost as if seasonal changes in climate were responsible.

24.   Plants were selected for their color, texture, seasonal change, and floral display.

25.   Recent California earthquakes have occurred most often in September and least often in April, possibly because of seasonal changes in air pressure, scientists suggest.

26.   Scientists hope to learn more about seasonal changes in tree foliage, crop production, soil moisture and ocean currents.

27.   Seasonal changes in demand are also less costly for online retailers because they have a worldwide customer base.

28.   Segue now to Dee Sawyer, the manager of Saks Fifth Avenue in Kansas City, who is probably as conscious of seasonal changes as anyone.

29.   Some people study foliage or birds for seasonal changes.

30.   The arrival of a seasonal change in refining patterns helped boost crude oil prices as well this week.