Question

PLEASE HELP ASAP Millions of nonnative cattle in Australia produce a huge amount of dung. For

decades, Australia has imported nonnative dung beetles to help clean up the dung. Which sentence best explains what would have happened if Australia
had not imported the nonnative dung beetles?
O
A. Other Australian decomposers would have cleaned up the dung,
O
B. Native Australian dung beetle populations would have filled the
niche.
O
C. All the cows in Australia would have died out.
O
D. Cow dung would have piled up in Australia.

Answer 1

D. Cow dung would have piled up in Australia.

Step-by-step explanation:

The native dung beetles of Australia prefers dry pellets of marsupials and decomposed dung and could decompose cattle dung for few weeks in the spring and autumn only.

Thus non native dung couldn’t be decomposed by the native dung beetles of Australia. The accumulation of dung promoted growth of flies that were pests.

It also affected the growth of vegetation in the fields. Then in 1967 the Australian government decided to import non native dung beetles and this move helped in the effective decomposition of non native cattle dung.

Answer 2

The correct option is D. Cow dung would have piled up in Australia.

Step-by-step explanation:

The native beetles of Australia did not feed on the dung from the non-native cattle. As the cattle were imported from another country, the native beetles did not recognize the texture of the dung and hence, did not feed on them. As a result, cow dung started to pile up. To get rid of the dung, the best possible solution was to import beetles from a different country which recognized the texture of the dung and could feed on it.