Sparrows are birds that were introduced in the mid 1800s to north america. it is known that sparrows from the north are larger and darker and sparrows from the south are smaller and weigh less. scientists believe that this is due to differeneces in weather in these two regions. this is an example of a) microevolution b) macroevolution c) migration d) mutation e) mutualism

Micro evolution

Explanation:

Micro evolution can be defined as the change in the allele frequency that occurs over a period of time within a population.

This change can be caused due to different processes: genetic flow, mutation, genetic drift, natural or artificial selection.

This is a phenomenon in which the organism living in two different regions appear differently.

hello there,

guys i’m confused.

which rock will weather faster?

answer: b rock

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