Neomyxine biplinicata is an eel-like hagfish. When they sense a threat, they excrete a substance from their pores that turns into a jelly-like fluid when mixed with water. This jelly-like fluid can either trap predators or clog their gills. Which two systems alert the hagfish to danger and help produce the slime that it uses as a defense?

explanation:

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.