What are the factor of population change and explain it

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

The platt amendment was a treaty that allowed the united states to build military bases in which country?

According to the constitution of the united mexican states (mexico), which of these statements is false? a) men and women are equal before the law. b) all children must attend elementary school. c) citizens must be at least 18 years of age to vote. d) catholicism is the official religion of the country.