Ddt does not dissolve
readily in water. if it did, how would the
accumulation of the pesticide in organisms be
affected?

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /

not sure if this what   you'r looking for would be percent composition

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.