This is a very vague question but i'd say they are modifying their emotional state
if two animals are held in captivity seperate when they finally meet they will more than likely be hostile to each other because they dont know what a friend is lets take a cat for example dont give a cat a friend and now it sees a interesting laser on the floor and chases it well thats adorable and all but you just taught your cat how to be hostile and hunt and it will do that for the rest of its life well now lets say this cat is 2 and an adult female when she comes across another female or another species of animal she will definitely attempt to fight it because its all she knows
<span>The way to do this is called Civil Disobedience
Martin Luther King Jr. described this as hatred and contempt for the law. It mostly involves telling the government no in subtle ways that does not involve violence resistance and peaceful demonstrations . usually it takes certain of such steps before governments can reverse certain policies that are unfavorable to her citizens.</span>
The correct answer is option (d) They allow the exchange of gases between cells in the leaf and the external environment.
Stomata are the tiny openings present in the epidermis (outer layer of cells) of the leaf. They have a pore which is guarded by the guard cells which controls the opening and closing of the stomata. Air enters and exits through the stomata.
The main funtion of stomata is to facilitate the gaseous exchange. The gas exchange that occurs when the stomata are open helps in the process of photosynthesis. During photosynthesis, carbon dioxide is taken in from the atmosphere and oxygen is released as a by-product of photosynthesis. The glucose produced is converted into the starch and stored in the leaves.
Also, water vapour diffuses through the stomata into the atmosphere by a process called the transpiration.
Thus, stomata are the structures that are mainly involved in the gaseous exchange between the cells of the leaf and the atmosphere.