Viruses are not living things because they do not meat the definition/standard science uses to define living things.
Viruses lack the ability to reproduce independently since they rely on host cells for replication. They also lack cellular structures and processes found in living organisms, such as metabolism and growth. These characteristics lead to viruses being classified as non-living entities.
The oxygen we breathe is contained in the Earth's atmosphere, which consists of approximately 21% oxygen. This oxygen is produced through photosynthesis by plants and other organisms.
Fish use gills to breathe underwater.
Viruses do not breathe because they are not living organisms. They are considered particles that need a host cell to replicate and survive. Once a virus infects a host cell, it uses the cell’s machinery to replicate itself.
gills
it contains oxygen so you can breathe and it contains blood cells
Humans
No, oxygen is a non-metallic element and is not considered alkaline. Oxygen is a component of the air we breathe and is essential for most living organisms for respiration.
photosynthesis helps organisms survive by providing them with oxygen to breathe.
Atmosphere.
yes...thry do!