Explain the importance of fossils and how they provide evidence for evolution. i really need help

Explica la importancia de los fósiles y cómo proporcionan evidencia de la evolución.
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In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

Which feature would you expect to find in a population in which sexual selection depends on male competition?

What’s a example of extrusive rock that cooled to quickly for grains to form