Virus : <span>Any of various submicroscopic agents that infect living organisms, often causing disease, and that consist of a single or double strand of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell, </span>viruses<span> are typically not considered living organisms
Virion : T</span><span>he infectious particle that is designed for transmission of the nucleic acid genome among hosts or host cells. A </span>virion<span> is not the same as a virus. I </span>define<span> virus as a distinct </span>biological<span> entity with five different characteristics
</span>Viroid: An infectious agent that consists solely of a single strand of RNA and causes disease in certain plants. Viroids<span> lack the protein coat (known as a capsid) of viruses and are the smallest known infectious agents.</span>
you have potential energy when you're stopped. you have kinetic energy when you're moving. so as you're going down a hill, kinetic energy is increasing and potential energy is decreasing.
Plants need water and sun to create their food source, glucose. When the plant was left in the closet it didn't have access to the sun. One of the requirements of life is that all living things need energy/have a metabolism. Without food the plant eventually died.
