Question

match each excerpt from h. g. wellss the time machine with the theme it expresses. humankind and nature good versus evil horrors of science evolution society and class so, in the end, above ground you must have the haves, pursuing pleasure and comfort and beauty, and below ground the have - nots, the workers getting continually adapted to the conditions of their labour. we improve our favourite plants and animals - and how few they are - gradually by selective breeding; now a new and better peach, now a seedless grape, now a sweeter and larger flower, now a more convenient breed of cattle. plainly, this second species of man was subterranean. there were three circumstances in particular

Explanation:

The first excerpt talks about the division between the wealthy (Haves) and the working - class (Have - nots), which relates to society and class. The second excerpt discusses selective breeding of plants and animals, which is related to the concept of evolution.

Answer:

So, in the end, above ground you must have the Haves, pursuing pleasure and comfort and beauty, and below ground the Have - nots, the Workers getting continually adapted to the conditions of their labour. -> society and class
We improve our favourite plants and animals—and how few they are—gradually by selective breeding; now a new and better peach, now a seedless grape, now a sweeter and larger flower, now a more convenient breed of cattle. -> evolution