The addition or removal of heat changes the temperature of an object. The temperature can cool down or it can warm up.
Hiking is kinetic energy.
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The scientific method is a process for experimentation that is used to explore observations and answer questions.
Answer:
The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.