Question

can u answer all these questions plz

Your name Page 9. 63) Modern oil spill cleanup techniques are able to recover and remove 99% of spilled oil from the marine environment. True False 64) A. they ensnare animals B. they are eaten by animals. C. their colors confuse animals. D.all of the above Plastics in the sea are a hazard to marine life because 65) in High concentrations of toxic heavy metals in estuaries are most likely to be found A. the water of the estuary B. air above the estuary. C. the sediments. cean waste management is less risky than land lieve that dee Some scienti 66) disposal because A. fresh water sources are not placed at risk. B. there is no atmospheric pollution as there is with incineration. C. coastal land fills degrade beaches and estuaries. D.all of the above E. none of the above

Answer 1

63) FALSE.

Explanation : It is possible to recover and remove only around 15-20% of the total oil spills from the marine environment because in case of emulsification, the oil mixes up with the water and this makes it is very difficult to clean up the spill using any of the standard means like dispersants, sorbents, skimmers, etc.

64) d) All of the above

Explanation : Plastics are a hazard to marine life because animals are ensnared, most of the marine animal eat plastics thinking it as food and the different colours of the plastics attract the animals toward it

65) c) the sediments.

Explanation : High concentration of toxic heavy metals in estuaries are most likely to be found in the sediments.

66) d) All of the above.

Explanation : Deep ocean waste management is less risky than land disposal because disposing off these wastes in the land can seep underground into the aquifers(source of drinking water) and degrade or contaminate them. Further burning these wastes on land(incineration) pollutes the atmosphere.