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HYDROSPHEREII

C2

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Across
2.microscopic bubbles of gaseous oxygen (O2) mixed in water and available to aquatic organisms for respirati
3.rich in organic and mineral nutrients and supporting an abundant plant life which, in the process of decaying, depletes the oxygen supply for animal life
4.organisms used to monitor the health of an ecosystem
8.substances meant for attracting and then destroying , or mitigating any past including weeds and insects
11.gives the EPA the power to set standards for the quality of drinking water
15.a chemical compound with the chemical formula H2CO3
17.a system of interrelated components, including the processes of precipitation, evaporation, transpiration, infiltration, groundwater flow, stream flow, etc., in addition to those structures and devices that are used to manage the system
20.openings in the ocean floor that release heat
21.pollution that comes from many places or an unidentified source
22.important in metabolism and are frequently used in fertilizers
23.a body of water in which freshwater from a river meets and mixes with salt water from the ocean
Down
1.sets and enforces quality standards for wastewater that is released by industry and governments
5.the responsible planning and management of resources
6.water safe for drinking and food preparation
7.the protection and propagation of fish, shellfish, and wildlife and recreation in and on the water
9.the degree or intensity of heat present in a substance or object
10.pollution that comes from a single site
12.substances that are toxic to plants and are used to destroy unwanted vegetation
13.a poisonous chemical that is used especially to kill insects and weeds
14.process of using energy stored in chemical bonds instead of sunlight to produce food
16.measure of how acidic or basic a liquid is
18.a measure of how clear water is
19.inorganic compounds that can be found in nature and in several foods we eat

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