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41. what are two good sources of dissolved oxygen for local water syste…

Question

  1. what are two good sources of dissolved oxygen for local water systems? a. moving water and photosynthesis from plants b. contact with the atmosphere c. calm water and plants d. plants and stagnate water 42. an area of land that is drained by a common system of streams a. water cycle b. glacier c. watershed d. aquifer 43. joggers running along an urban running path noticed paint running out of a culvert into a nearby creek. local authorities investigated and found that some homeowners had painted the outside of their home and dumped the extra paint down a storm drain. what type of water pollution did they cause? a. toxic b. sediment c. nutrient d. bacterial

Explanation:

Brief Explanations
  1. Los movimientos del agua y la fotosíntesis de las plantas son buenas fuentes de oxígeno disuelto en el agua. El movimiento del agua aumenta la interacción con la atmósfera, lo que permite que el oxígeno se disuelva, y las plantas producen oxígeno a través de la fotosíntesis.
  2. Una cuenca hidrográfica es un área de tierra que es drenada por un sistema común de arroyos y ríos.
  3. La pintura es tóxica y su vertido en el drenaje de tormentas causará contaminación tóxica en el agua.

Answer:

  1. A. Moving water and photosynthesis from plants
  2. B. Watershed
  3. A. Toxic