Delta Pronunciation: (del-ta). Delta letter quick facts. Delta is the fourth letter (Greek letter #4) in the modern day Greek alphabet. The Delta letter appears before Greek letter Epsilon which is pronounced (ep-si-lon), and after the letter Gamma which is pronounced (gam-ah). Delta Letter Template size: 600 X 600 pixels. Greek letter set: #1 to #12 (12 color combinations).
The most common disease-causing agents are viruses, bacteria, protozoa, and parasitic worms. Viruses are not living, but do get transferred between living organisms. The West Nile Virus is transferred from mosquitoes to humans. Vaccines are a good way to prevent the spread of viruses.iruses are the disease-causing agent that most people are familiar with. They cause colds, the flu, HIV, meningitis, polio, chicken pox, rabies, West Nile, and a number of other diseases. Viruses themselves aren't living things, but they do get transmitted between living organisms.
Diseases are called by pathogens. These can be bacterias, viruses, protists, fungi, or parasites. Disease causing microorganisms and body's immune system. Many things can cause disease including but not limited to bacteria, viruses, parasites, toxins, injury, accidents, and stress.Each may cause disease via a different mechanism which could be a topic for a new question.ommonly we think of disease as bacteria or harmful pathogens or free radicals entering the body, causing a disruptio â¦ n in homeostasis (body's ability to maintain balance).