It is essential because without it plants would have no source of energy. Therefore disrupting the whole food chain.
Answer:
it cannot be easily degraded in our environment.Like humans, animals and plants are exposed to PBTs in the environment through air, water and food. ... Persistent bioaccumulative toxic substances (PBTs) are chemicals that do not degrade easily in the environment.
The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive