In the trachea there is a layer of epithelial cells called the respiratory mucosa, which contains
specialized cells that produce mucus. These
specialized cells are called goblet cells and the
function of the mucus is to keep the trachea
moist. What is this an example of?

yes!

explanation:

because it has a type of fat that can make you extremely sick

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.