The table below shows the population changes of several animal types from 1977 to 1990. summarize the information by selecting and reporting the main features and make comparisons where relevant.

The line graph compares the number of three different types of animals, which are bears, dolphins, and whales, between 1977 and 1990.

Overall

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, the rate of bears steadily increased throughout the given period,

while

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that of dolphins dramatically decreased over the same time.

On the other hand

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, the size of

Correct article usage

the whales’

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whales’

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whale’

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population fluctuated during the same era. In detail, there were a few bears in 2011, but the

fraction

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number

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of them sharply jumped to 100,000 in 2013. Until 2015, their population slightly grew, before it reached a peak point

at

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of

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below 200,000 in 2016.

However

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, there were 150,000 dolphins in 2011, but they experienced a significant decline to below 0.1 million for a year from 2011. As the proportion of them dropped to below fifty thousand again in 2013,

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then

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apply

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they were almost endangered in 2016.

Moreover

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, that of whales went up and down in every single year, and the highest point of it was a hundred thousand in 2013, and the lowest point of it was 50,000 in 2012.