Hello there,
The answer to your question is <span>mast
Hope this helps :))
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<span>No change in temperatures between seasons. Tilt is the angle between the direction of positive pole and the normal to the orbital plane. Seasons occur due to the tilt of axis. If there is no or zero degree tilt there will be no season. Season means changes in temperature. the amount of sunlight received remains same throughout the year which causes for no change in temperature and hence no season.</span>
B. It allows some molecules to enter the cell and blocks entry to others.
