Why was the basin system of irrigation largely abandoned by farmers near the nile river in modern times? the basin system only allows the planting of one main crop. the basin system is less dependent on the nile flood. the basin system was developed thousands of years ago. the basin system is no longer effective in places like egypt and northern sudan.

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group. no, this does not need to be reported since it is unrelated to participation in the study. no, this does not need to be reported because two weeks have passed. no, this does not need to be reported since the subject recovered.

What changes occurred over time that was over directly to this event? alice paul an the woman’s suffrage movement

What is gender and race intersection?