34. Materials are returned to the blood from the filtrate by which of the following processes? (A) filtration. (B) ultrafiltration (C) selective reabsorption (D) secretion

2. Genetically engineered plants (A) are more difficult to engineer than animals. (B) include a transgenic rice plant that can help prevent are more difficult to engineer than animals t vitamin A deficiency. (C) are being rapidly developed, but traditional plant breeding programs are still the only method used to develop new plants. (D) are able to fix nitrogen themselves

34. Materials are returned to the blood from the filtrate by which of the following processes?
(A) filtration.
(B) ultrafiltration
(C) selective reabsorption
(D) secretion

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