What made it important for maya mathematicians and astronomers to work in unison

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

Abrief, "first-step" presentation of a work to be completed is called a

How does a long war with a high number of casualties generally affect civilians’ and soldiers’ opinions of their government?