Prions were not widely known to be infectious agents until the 1980s. give two reasons why this might be so.

1 answer:

7 0

The first reason is their size. They are very small and are very difficult to see. Special technology needed to be developed in order to observe them and their behavior and reach the conclusion that they were in fact infectious agents that could cause diseases. This wasn't possible before because the microscopes weren't as well developed.

Another is that they have a very long incubation period. This means that if you have them, a long time will pass before they start harming you which meant that many people believed them to be harmless since they couldn't track their behavior over a longer time period, also due to the lack of good technology.

You might be interested in

many families were being destroyed by people who drinks too heavily and spent much of the earnings on alcohol beverages

Serga [27]

Answer:

causing the families to lose their homes, and their dignity.

Explanation:

4 0

3 years ago

The British and the colonists had many conflicts in the time before the American Revolution. What conclusion can be made about w

mel-nik [20]

Okay, as I read the history, the Stamp Act and the Townshend Acts were both intended to tax the colonies to help Britain pay off it's debts from the War. The Declaration did not impose any new taxes, but justified making the colonies more dependent on the Crown/British government, so I interpret that as "justification" for the taxes. It's not a word that was used at the time, but our interpretation of it in our own time.(The answer is D) Your welcome!

5 0

3 years ago

Read 2 more answers

Everest mckinley kilimanjaro matterhorn

svp [43]

The answer is Kilimanjaro.

4 0

3 years ago

Vì sao giới chủ lại thích sử dụng lao động trẻ em

NARA [144]

Answer:

bvbvbv

vbExplanation:

hgb

4 0

2 years ago

What were some actual motives of why people fought in the crusades?

vredina [299]

Answer:

The Crusades were a series of military campaigns organised by Christian powers in order to retake Jerusalem and the Holy Land back from Muslim control. There would be eight officially sanctioned crusades between 1095 CE and 1270 CE and many more unofficial ones. Each campaign met with varying successes and failures but, ultimately, the wider objective of keeping Jerusalem and the Holy Land in Christian hands failed. Nevertheless, the appeal of the crusading ideal continued right up to the 16th century CE.

Explanation:

7 0

3 years ago