Why did zookeepers have such trouble keeping koala bears alive when other animals from australia were thriving in zoos? unlike most australian animals, koala bears require moderate temperatures to thrive. zookeepers weren't feeding koalas the kind of food they require. koala bears are susceptible to viral infections.

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.