Can anyone help im struggling a lot

A(n) is an alliance or collection of parties.

Persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research was approved.persons who are under 18 years of age.persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research will be conducted.persons who are under 21 years of age.

The principle that the geoglical processes that we see today have occurred through out earths history is called