If the tank is a small one and filled with freshwater, an activity performed by a student that is investigating an abiotic factor using the setup would be to record the temperature of the water.
Answer:
Explanation:
Similar to a guard at the outside of a club, deciding who should be allowed in and who to keep out, the cell membrane is semi-permeable, regulating the movement of substances in and out of the cell with the help of protein channels.
The cell membrane is a double layer of lipids (fats) and proteins that surround a cell and separates the cytoplasm/ organelles from its surrounding environment.
Answer:
Both the alpine and taiga biomes have two distinct seasons.The alpine biomes is found on five of the seven continents, the taiga biomes is found on three. The alpine biome gets an average of 12 inches of precipitation annually and taiga biome gets an average of 12-30 inches annually. Both alpine and taiga biomes have cold winter with temperatures below freezing and warm summers. The taiga biome has a greater average temperature range in the summer than does the alpine biome .
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The united states banned the use of ddt because it was running from the farmers fields into rivers and the fish were absorbing the chemicals. Eagles and other birds would eat fish out of the rivers and because they were infected with the chemicals, the bird also was infected. When the birds would lay their eggs the shell would be really thin and they would sit on the eggs to warm them and the shell would break. This is the reason why the Bald Eagle became endangered.