Koalas do not have "litters". Whether their first, second or third birthing, they almost invariably have one single joey. twins have occasionally been observed, but they are rare.
Generally, no. Whilst rubbish is sometimes dumped in eucalyptus bushland, koalas tend not to come in contact with it. Chemicals would be another matter, as koalas could easily be contaminated by chemicals and poisons as they move between the trees in their home range, which they do quite regularly.
Adult koalas are simply called koalas.
Koalas are not primates. Koalas are marsupials.
No. There are no koalas in Ghana. Koalas are native to Australia alone.
There are no koalas in Germany. Koalas are endemic to eastern Australia.
do koalas have nest
yes koalas do have necks
There are no koalas in Cuba. Koalas are endemic to Australia, where they are native to the eastern states.
Koalas are marsupials, which are pouched mammals. Koalas are native to Australia alone.
No. Koalas do not actively mimic anything.
Yes. Koalas reproduce through sexual reproduction.