Question

The graph indicates that (1)
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

Answer:

survival of the fittest’ is prevalent in nature.

Explanation:



Answer 2

Due to bird extinction

Explanation:

• The bird population is declining at a noticeable rate which may result in serious problems in the coming future. There are different reasons for this and the contribution percentage of each cause is well depicted in the given graph.

• From the graph, we conclude that invasive species are the most prevalent cause of extinction, followed by exploitation and habitat loss/degradation by anthropogenic actions.

• Thus, the given statement that humans are not the cause of bird extinction is also incorrect, fire and floods (natural calamities) are affecting the bird population and the graph does not indicate the prevailing survival of the fittest.

• Hence (c) 'Unknown' and 'Others' combined to cause the same amount of loss as 'Habitat loss/degradation is most appropriate.