Episode 38: Plant Sweat

How does heat affect plants? How do plants affect temperature?<br />Summer in the City: https://www.youtube.com/watch?v=U7ofnHmxE-I<br />Photosynthesis: Mrs. Frizzle says it best: https://www.youtube.com/watch?v=cMNVwkxoW6k<br />Stomata: any of the minute pores in the epidermis (skin) of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.<br />Transpiration: the exhalation of water vapor through the stomata.<br />Evapotranspiration: the process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.<br />Heat index: a measure indicating the level of discomfort the average person is thought to experience as a result of the combined effects of the temperature and humidity of the air.<br />To better understand evaporation, give 'The Water Cycle Song' a listen: https://www.youtube.com/watch?v=Flnn0phfpzw<br />