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(i) List the different members of the marine mammalian groups.

(ii) Explain the term "stranding" and give some reasons why cetaceans strand?

(iii) Cetaceans, being predators at the top of the food chain, may be good indicators of the health of the oceans; however, their populations have declined considerably over the past decades. List some of the potential threats causing their decline.

(iv) What do you understand by the term "Echolocation"

(v) Give one difference between a marine turtle and a marine mammal.

(vi) List the species of marine turtles common in Mauritius waters.

(vi) What do we mean by "water quality"?

(viii) Why do we have Water -Quality Standards and Guidelines?

(ix) How is water quality measured?

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Category:- Chemistry
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