Aquatic Biomes
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each of the black spaces below before clicking
on it to display the answer.
Help!
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show | marine and freshwater
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What do the marine biomes include? | show 🗑
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show | less than .05 percent.
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show | Freshwater biomes include ponds and lakes and flowing water, such as streams and rivers. Freshwater wetlands—swamps, bogs, temporary pools, and marshes—are also considered freshwater biomes.
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True or False: organisms may not occupy more than one biome. | show 🗑
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show | Salinity, pH, light, and temperature. All but the shallowest wetlands, streams, and ponds are affected by changes in abiotic factors with depth.
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show | Red light is absorbed more rapidly by water than blue light. Red light is used in photosynthesis, so the reduction in the quality and quantity of light severely impairs photosynthesis below a certain depth.
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show | The photic zone, through which light penetrates, and the aphotic zone, where there is little or no light. Photosynthesis takes place only in the photic zone.
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show | Solar radiation is absorbed by the water in the photic zone, increasing its temperature. The temperature in the photic zone typically decreases with depth. Warm water is less dense than cold water.
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What is thermocline? | show 🗑
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show | Exchange of gases between water and air occurs in the upper layers. Phytoplankton produce oxygen as they carry out photosynthesis. As a result, the upper layer of water typically contains more dissolved oxygen than deeper waters.
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show | The upper layers are nutrient deficient, and the lower layers are nutrient rich.
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show | The bottom of a lake or an ocean. In deep water, this zone is cold and completely devoid of sunlight. It usually has lots of organic matter, which is a rich source of food for organisms.
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show | Decomposition in this zone may decrease oxygen levels in the water and may also lower pH as the acidic products of decomposition are released.
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show | moving (Rivers and streams) and standing water (ponds, lakes, temporary pools, freshwater swamps, and freshwater wetlands)
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show | True!
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show | Source, transition and floodplain zone
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show | They are commonly rich in oxygen but low in nutrients.
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show | True
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show | The zones result from differences in light, temperature, oxygen, and nutrient availability.
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show | The well-lit area close to shore, where rooted and floating plants grow
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Where is the limnetic zone? | show 🗑
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show | Below the limnetic zone is dark water, called the profundal zone, where photosynthesis cannot take place. Oxygen concentration and temperatures are lower here, and organisms, including certain fish, have adapted to these conditions.
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show | Detritus from the above layers.
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How does oxygen enter a lake? | show 🗑
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show | Decomposition of organic matter by fungi and bacteria removes oxygen through the process of respiration. The removal of oxygen from the water is called Biological Oxygen Demand or B.O.D.
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What makes a lake oligotrophic? | show 🗑
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show | Lakes that have high levels of nutrients and high plant growth.
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show | They are mostly nuetral between high and low nutrients.
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show | Freshwater wetlands are areas of shallow water that support the growth of aquatic plants
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show | low pH and low in available nutrients.
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What are ephemeral pools? | show 🗑
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show | <1%
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T/F: The shore is where many organisms live. | show 🗑
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show | Vertically.
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Where is the neritic zone located? | show 🗑
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show | Beyond the continental shelf is open, often very deep, water. In the upper, lit part of this pelagic zone live phytoplankton that form the base of a complex food web.
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Where is the abyssal zone? | show 🗑
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show | The environment is oxygen deficient and is rich in sulfur and other compounds. The communities at these vents are supported by chemoautotrophs, bacteria and archaea that use inorganic chemicals to provide the energy they need to make carbohydrates.
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show | Estuaries are the places where fresh water from rivers meets the ocean. They typically consist of the end of a river valley that has been flooded to create a broad inlet.
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show | False!!
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show | a very rapid rise in the phytoplankton population due to added nitrogen and phosphorus from fertilized land or animal waste
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show |
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