Richard is an avid gardener who spends a lot of time caring for the plants in his garden. to minimize damage from pests from his garden, richard uses a pesticide spray. at first the spray is very effective and kills off most of the insects that he sees on his vegetable plants. however, after a few years of using the same pesticide he notices that some insects are surviving and continuing to eat his plants. this selection for herbicide resistance in the insects is an example ofa. natural selection. b. evolution. c. an adaptation. d. a gene. e. a learned response.

a. Natural selection

Explanation:

The pesticide killed off all of the pest that weren't immune to it and the pests that were immune reproduced with each other creating offspring that were immune to it as well and so on this is a example of natural selection.  

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d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

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