Biology

Krish Kaiser

5 July, 05:30

Early one spring, a group of bird-watchers counted 30 different species of birds in a tract of forest. In the early spring two years later, the bird-watchers counted 15 species in the same area. Which statement best summarizes this situation?

Birds follow different migratory paths each year.

The forest shows a decrease in biodiversity.

Human beings disrupt the presence of animals in ecosystems.

It is important to study living things to better understand the earth

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