The percentage of variance in a group of individuals that can be attributed to nongenetic differences is called:

Environmental variance

Explanation:

the changes in individual other than genetic can be occur due to environmental changes. Like the length of hair, any scar due to accident or injury which remains but it did not appear in next generation because it is not genetically linked but it is environmental or external feature thats is non genetic changes in individual.

no the answer is c only objects touching the earth's surface can be acted upon by an outside force

answer; collective security;