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A pollutant fits that description.
because the pollution hurts the animals and could eventually be harmful to humans
Ticks are often harmful to humans. For instance, the sheep tick could cause Lyme disease in humans.
Water pollution is harmful to animals because when the animals eat or drink the water the water could poison the animal and the animal could die.
A pollutant is any type of substance in the air that could, in high enough concentration, harm animals, humans, vegetation, and/or materials. It is something that is harmful to our environment.
Not always , but if the substance metal realises toxic gas or react with environment it could bevery harmful.
Animals are quarantined to see if they have any diseases that could be harmful to humans. One of the worst is rabies which is potentially deadly if not treated fast enough.
The substance in plants and animals that could be examine for radioactivity to test its hypothesis in the cell of the plant or animal.
It is unlikely, but in theory any animal might carry a disease that could be harmful to humans.
No, they are not harmful to humans. They are known for raiding henhouses and carrying off small poultry. Some people could consider that harmful. They may also take baby farm animals for food, like kittens. It is certainly sad, but it's the way life is. Nevertheless, they don't harm humans.
There is usually a law against running sewage line just into the woods. The raw sewage that comes out into the woods could possible be harmful to animals and humans.
They would say how stupid humans are for testing on them and thinking that just because animals don't look like humans, they don't have feelings...I wish animals could talk.