Fig. 4.1 shows a photograph of a yellow-shouldered Amazon, Amazona barbadensis, which is a parrot species found on the Caribbean coast of Venezuela.
(a)[2]
State the vertebrate group to which A. barbadensis belongs, and give two features used to classify animals in this group.
(b)[3]
Explain what biologists mean when they use the term populations of animals, such as A. barbadensis.
(c)[2]
Suggest why release programmes for captive-bred parrots were not successful.
(d)[3]
Outline the disadvantages of such programmes.
(e)[3]
Explain the advantages of conserving ecosystems.
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