When fluid flow through the distal tubule increases as a result of increased gfr, the macula densa cells send a chemical message to the neighboring afferent arteriole. the afferent arteriole constricts, increasing resistance and decreasing gfr. this type of autoregulation involving both the kidney tubule and the arteriole is known as feedback?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above