He/she is talking about genetic disorders. Interesting topic. An oncologist is a cancer specialist so I don't know the specific cancer disorder but I'm sure there is one.
Answer:
C: a coastal region with three ecosystems, each of which supports many different species
Explanation:
Biodiversity means the variety of life in the world or in a particular habitat or ecosystem. So, a costal region with three ecosystem and each has many species would be a biodiversity.
Answer:
A) It uses less energy to make something from recycled materials than from new materials.
Explanation:
When a recycled material is used to make a new product, it conserves energy because the recycled materials have already been processed once; so making something from it for the second time uses less energy-intensive than the first. For example: Making new aluminium from old products uses 95% less energy than making it from scratch.
Hence, the correct answer is "A)"