Which of the following would be included in public health? -purifying water with chlorine to kill disease-causing bacteria species
-reducing water pollution to protect an endangered fish species
-providing water and wetland habitats necessary for many frog species
-removing solid waste from water to prevent killing marine bird species

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.

not: both offer magnification to the atomic level.

i think that it is c, d, and e, hope this

ice cream

explanation: