2. The food web below represents the organisms of a large community. The arrows show t energy flow in the system. Cod Killer Whale Phytoplankton Krill Harp Seal Baleen Whale (a) Phytoplankton is an aquatic autotroph. Describe its role in the food web. (b) The cod populations of some communities have become drastically reduced in num overfishing. Explain what effect this might have had on the killer whale population in (c) Calculate the amount of energy that will be available for the Baleen Whale after the 200 J of phytoplankton. The Krill used 67 J for cellular respiration and 100 J for fece response. (d) Global climate change is predicted to cause increased water temperatures. Explain in temperature might affect this community. Answer: Type your answer here:

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Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.