if something receives sunlight, then it will decrease in garbage & the land around the special receives direct shadow ->  the air around the equator will increase in temperature  the air around the equator will increase in temperature & if something controls in temperature, then that something will be warm ->  the air is warm around the equator  the air is warm around the equator & the land want formed open to the sky is humid in dry -> air masses formed over the ocean near the equator are moist / warm