Question

The graph indicates that

a. 'survival of the fittest' is prevalent in nature.

b. floods and fires do not affect the population of birds.

c. 'Unknown' and 'Others' combined causes the same amount of loss as

"Habitat loss/degradation'.

d. human beings are not the cause of bird extinction.​

Answer 1

Causes of Bird Extinction

Explanation:

• The bird population is decreasing at a noticeable rate that can result in a grave problem in the forthcoming future. There are different causes of the same and the contributing percentage of each cause is well depicted in the given graph.
• From the graph, we infer that Invasive species is the most prevalent cause of extinction followed by exploitation and habitat loss/degradation by anthropogenic actions.
• thus, the given statement human beings are not the cause of bird extinction is wrong also, fires and floods (natural disaster) are affecting the population of birds and the graph doesn't indicate the prevalent survival of fittest in nature.

• Therefore (c) Unknown' and 'Others' combined causes the same amount of loss as  "Habitat loss/degradation' is the most appropriate one.