social order (social orders plural) The social order in a place is the way that society is organized there. n-var. ...the threat to social order posed by right-wing extremists. social science (social sciences plural). 1 n-uncount Social science is the scientific study of society. 2 n-count The social sciences are the various types of social science, for example sociology and politics. usu pl. social scientist (social scientists plural) A social scientist is a person who studies or teaches social science.
They have to be let in through special doors called stomata. Stomata can be on both sides of the leaf, but are usually concentrated on the bottom of the leaf to limit water loss due to evaporation. If you collect leaves from many different plants, youâll notice that they donât all look the same.
This is because, to prevent water loss. If the stomata were on the upper side of the leaf, it would be in direct contact with the sun, which would absorb all the water from the leaf, when the stomata is open (which is around 9am and 3pm). This would not be essential for the leaf, as it would not be able to photosynthesise, hence, unable to respire, therefore, would die due to a lack of food and energy.