Answer:
A term applied to hard rocks, or <u>igneous and metamorphic rocks</u> that are distinguished from sedimentary rocks because they are typically more difficult to disaggregate. Well cemented sedimentary rocks are sometimes described as being hard, but are usually called soft rock.
Direct contact:
- Coming into contact with an infected person's blood
- Touching an infected person
Indirect contact:
- Coughing or sneezing, which sends germs into the air that can be inhaled by or come into contact with others, making them sick
- These germs can also linger on surfaces like tables and doorknobs
Source: Delaware Health and Social Services
