Are Florida Manatees A Conservation Success Story or Are They Still in Danger?John R. Platt
At one point, there were only about 2, 000 manatees left in Florida. But by 2016, there were about 8, 800 manatees. But now manatees are facing a new challenge(挑战) : They can’t get enough to eat. Because of pollution, sea grass that manatees depend on began to disappear around ...
How many are there?What are their habitats? Answering these questions is helpful in planning conservation actions and preventing habitat loss.Manatees have long been tracked with the help of GPS devices attached to their tails. However, the severe marine environments they often live in lead to ...
根据后文At one point,there were only about2,000manatees left in Florida.But by2016,there were roughly8,800manatees.(佛罗里达州曾经一度只剩下约2000头海牛。但到2016年,大约有8800头海牛。)可知,后文提到了海牛数量有所增加,说明保护措施起效了。因此选项"D.With protection,...
Wildlife workers in Florida are feeding manatees(海牛)to keep them from starving(饿死).But feeding these large animals takes a lot of food.So far,the workers have provided manatees with 25 tons of lettuce.By 2025,there will be 50 tons of lettuce needed,said the workers.They also said the...
Therearethreekindsofmanatees.TheWestIndianmanateelivesalongtheNorthAmericaneastcoastfromFloridatoBrazil.TheAmazonianmanateeinhabit(栖居在)theAmazonRiverandtheAfricanManateeswimsalongthewestcoastandriversofAfrica.Manateesdifferinsizefrom2.4to4metresandcanweigh200and590kilograms.Thoughtheymayseemcumbersome,manateescanswim...
which is boats.Manatees are curious,and fairly slow.That has led to thousands of manatees being injured or killed by boats.With protection,manatees managed to bounce (反弹) back.At one point,there were only about 2,000 manatees left in Florida.But by 2016,there were roughly 8,800 manatees...
Over the last five years, anaverage of 117 manateeswere recorded dead over the same January-February time frame, meaning three times as many manatees have died so far in 2021. There have been too many sick or dying manatees to save in the estuaries off the Atlantic coast of Florida. ...
Manatees(海牛)arehugeseaanimals.Theycanbeaslongas4metersandweighupto590kilogramswhentheygrowup.Althoughthey'reverylarge,manateesonlyeatseagrassandotherplantsthatgrowinthesea.That'sonereasonwhythey'resometimescalled"seacows".Theyspendmostoftheirtimeinwarmwaterlookingforfood.Since1967Florida'smanateeshavebeenonthe...
One of the biggest problems faced by the creatures is boats.Manatees are curious and fairly slow, which has led to thousands of manatees being injured or killed.3.D At one point, there were only about 2,000 manatees left in Florida. But by 2016,there were roughly 8,800 manatees.But ...