Before
Principle of superposition of strata
Younger
Principle of cross cutting
Explanation:
Relative dating is method of assigning ages to geologic events in nature. This is based on certain principles and laws proposed by earlier geologists.
Relative dating differs from absolute dating in that absolute dating assigns real quantitative numbers to geologic events.
- From the analogy of the building provided, according to the principle of superposition of strata, the oldest layer is at the bottom of the sequence and the youngest on top.
- The lowest part of the section must of the section must have been constructed before the parts above it were constructed.
- Based on the principle of cross cutting "geologic features that cuts another are usually younger than the sequence they cut through ".
- The cracks on the wall is cross-cutting feature that appeared after the wall was formed.
- Therefore, it is younger than the wall.
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Answer:
Most peppered moths used to be grey with dark spots, but have evolved to be mostly black. This is because pollution from the Industrial Revolution threw soot on the trees causing them to look black. This gave the black moths camouflage from predatory birds meaning they survived and reproduced. By survival of the fittest, the peppered moths became black like the trees.
Explanation:
it is near the south pole.
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The correct answer is B. Protection and dispersal of seeds
Explanation:
In plants, fruits are structures that form as a result of fertilization, which makes ovules become seeds and flowers maturate to become fruits. This is necessary for the reproduction of plants, as fruits contain seeds or genetical material that is protected by different layers and leads to new plants if seeds are dispersed. The process of dispersal commonly occurs as the fruit falls from the plant or is eaten by other organisms and then disperse in other areas, which allow plants to reproduce. According to this, the main function of fruits is protection and dispersal of seeds.
