The mechanism of urine formation involves three processes: filtration, reabsorption, and secretion. primary urine is formed by filtration from the blood. in primary urine, certain substances are reabsorbed into the blood and other substances are secreted into the primary urine from the blood.

One of the largest seafood exporters to the united states is a. china b. brazil c. mexico d. saudi arabia

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.