DNA mutations can arise from uncorrected errors in DNA replication, inheritance, and . catching an influenza virus from a person with mutated genes a poor diet lacking in vitamins and minerals chronic sleep deprivation environmental insults abnormal cell division

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

a. to encourage apoptosis

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.