Egg Structure and Incubation. 0.0 / 5 ? Environmental and Land-Based Science????GCSEOCR Created by: GeorgiaOlivia2001Created on: 22-02-18 10:54 762351 Across 1. Prevents entry of bacteria. (5, 8) 2. Becomes attached to the air space it carries oxygen to the chick and carbon dioxide away from the blood vessels. It stores waste from the chick. (9) Down 2. Supplies food and water and prevents too much jolting. (7) 3. Thickened, twisted albumen that holds the yolk in place. (7) 5. It is porous and allows gas exchange. (5) 6. A protein and fat food supply for a growing chick. (4) 7. Allows the exchange of gases between the embryo and the outside. (3, 5)
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