What evidence did scientists use to develop the Law of Superposition? 1.Fossils and Rock Layers 2.Rock Layers only
3.Fossils only
4.Rock Layers and the environment

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

silt loam

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all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

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