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4 points
Which of the following is required for a trait to become more common
over time in a population? *
There must be many varieties of the trait in the population.
The trait must allow members of the population to eat only some kinds of foods.
The trait must be the result of an immediate change in the environment.
The trait must give individuals an advantage in producing offspring that survive.

Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits to become more rare. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.

Explanation:

It went from lots of different fish and even a turtle to only one fish. The diversity and population size drastically changed. There was also some change with the plants/coral but not much.

Explanation:

This is from the Coral Reefs 2 simulator.