1. when the finches first colonized santa maria and san cristobal, g. fuliginosa probably had beak sizes similar to finches on daphne island, and g. fortis probably had beak sizes similar to finches on island. 2. significant overlap in beak size would have resulted in for food. 3. natural selection favored phenotypes that competed for food. 4. in g. fortis, finches with were selected for. 5. in g. fuliginosa, finches with were selected for. 6. each species experienced selection, which resulted in character displacement for beak size. 7. character displacement is adaptive for both populations because it interspecific competition.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.

1) a

2)c

3)a

4)c

5)b

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