What name is given to the open ocean? pelagic realm intertidal zone benthic real

Question

What name is given to the open ocean? pelagic realm intertidal zone benthic realm photic zone What name is given to the seafloor? pelagic realm intertidal zone benthic realm aphotic zone Which of these biomes is maintained by fire? temperate deciduous forest chaparral and savanna desert and chaparral savanna and temperate grassland Permafrost, or permanently frozen subsoil, characterizes temperate deciduous forest chaparral tundra coniferous forest Water moves from land to the atmosphere through. precipitation only transpiration only transpiration and evaporation evaporation and precipitation What fraction of Earth's surface has been altered by human use? 25% 50% 75% 95%

Explanation / Answer

26. Pegalic means the open sea in (Greek-derived word). In the pelagic zone, oceanic water is not in contact with shore. The mean depth is 3.6 Km and life decreases with increase in ocean level. The different parameters important in pelagic zone are intensity of light, temperature, nutrients, and others.

27. Benthic zone is lowest layer of sea. This zone shows the presence of benthos, and other invertebrates. Benthos are small organism such as crustacean, therefore named as benthic zone. Benthos live in the substratum or bottom of ocean and cannot in upper layer of ocean.

28. Chaparral and Savanna biomes are maintained by fire. Chaparral has Mediterranean type of climate (wet winters and dry summers), Characterised by infrequent fire, these fire may be sometimes natural or sometime man- made. Natural conditions results from Mediterranean condition of climate, whereas power failure, collision or accident in vehicles. Similarly, Savanna known as woodland-grassland, feature with the seasonal water and considered this biomes as the transition between tropical and desert biome in term of water availability. Savanna biome has frequent fire due to events leads by the human. This biome has vegetation dominant with fire resistant plants.

29. Permafrost is a soil and rock in high altitude, which remains below freezing point for more than two years. Tundra type of biome has low-temperature type of features. The vegetation present show features of short shrubs, mosses, lichens and others. Permafrost tundra region lies in area around Russia and Canada.

30. Water moves from land to atmosphere by transpiration and evaporation. Evaporation is simply vaporisation of liquid into the atmosphere. Whereas, transpiration is the process in plant which consists of loss of water droplets from tree leaves.

31. The earth surface atered by human is 75%

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