A carrier
Pathogens are any organisms that can cause disease in humans; this includes a variety of viruses, bacteria, fungi and proteinaceous infectious material (such as prions). By definition, a human becomes infected with a pathogen through exposure and potentially develops disease related to that infection with a pathogen.
Attachment: Pathogen attaches to host cells. Invasion: Pathogen enters host cells and starts to replicate. Evasion: Pathogen evades host immune response. Spread: Pathogen spreads to other tissues and host organisms. Damage: Pathogen causes damage to host tissues and organs.
elks are related organisms to the woodland caribou
Pathogens are disease-causing micro-organisms, such as viruses and bacteria
Antibiotics are chemicals produced by living organisms that kill or inhibit the growth of other organisms, particularly bacteria.
A provirus is a form of a pathogen that has integrated into the host's DNA and can remain latent until it is activated to produce a new infectious virus. Pathogens can become proviruses by integrating their genetic material into the host cell's genome.
Pathogen means "disease-causing" (pathos-: suffering, disease; -gen: begetting) Therefore: "harmful to living organisms" For the other answers: beneficial organisms are not pathogens; harmful only to plants are specifically plant pathogens; "nearly extinct" has no relevance in this question.
damselflies
evolution
They are related in that vectors are the organisms carrying the pathogens or virus itself. A virus relies on the vectors to spread to other organisms and reproduce.
bacteria, and other infectious agents are called pathogens. This also includes viruses, even though they technically aren't organisms
There are many organisms that cause disease. Bacteria, like H. Pylori that causes stomach ulcers. Of course, rats can cause diseases and they are still organisms, just not single celled. They carry ticks, and their feces isn't good to breath in. Ticks carry diseases, and rats can carry sickness which can spread to humans.