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Question:
(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?
the most probable radius for finding the electron in he+
The electronic structure of four elements A, B, C, D are: (1) 1s 2 (2) 1s 2 , 2s 2, 2p 2 , (3) 1s 2, 2s 2 , 2p 5 ,
convert n-propyl alcohol to iso propyl alcohol
give examples of mixtures separated by distillation under reduced pressure
The pH scale: The equation: p Kw =14.00=pH+pOH is obtained by taking the negative logarithm to the base 10 of the autoprotolysis equation, where In general pX denotes -
Nucleophilic addition reactions (i) Carbonyl compounds give nucleophilic addition reaction along with those reagents which on dissociation give electrophile also nucleophile.
lABELed diagras
The number of orbitals in the fourth principal quantum number will be: (1) 4 (2) 8 (3) 12 (4) 16 Ans: 16
The amino acid glutamine can be produced bythe following equilibrium in the presence of a suitable catalyst. The equilibrium constant for this reaction is 3.5 x 10-3 at 25 oC.
Caculate the amount of heat energy needed to raise the temp. Of the water in a 40 gal (151-kg) home water heater from 19.o celcius (66.2 f) to 60.00 C (140.f
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