Explain what would happen to an animal if the vegetation around them disappeared ??

If the vegetation around them disappeared all life requiring oxygen would die. Life means sun, water, and green plants. This is practically impossible to disappear all plants without cosmic accident. If that happens then all animal kingdoms will die simultaneously.

Explanation:

Vegetation is the source of energy for all organisms. All other organisms directly or indirectly depend on them for food. So, if all the green plants disappear from the earth, all the herbivores will die due to starvation and so will the carnivore, i.e., it would result in the extinction of life from the earth.  

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Vegetation means all the green plants that we see around us. If there will be no vegetation on earth all the organisms will die because we all need oxygen to breathe whoch we get from plants only. The end of vegetation means the end of life. The animals, human beings will start to die if there is no vegetation.

All the organisms directly or indirectly depend on plants even the carnivores. Example:- Lion eats deer and deer eats plants, If there are no plants the deer will die and if deer will lion and other carnivores will have nothing to eat. Therefore resulting in their death also indirectly.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.