In 1831, charles darwin visited the galapagos islands. while observing the giant land tortoises that lived on these islands, darwin noted that the shape of the tortoise shell varied depending on which island the tortoise lived. tortoises on one island had round shells, for example, whereas tortoises on a neighboring island had more flattened, saddle-shaped shells. which statement best summarizes darwin's explanation for these differences?
a) random mutations caused the shape of the shells to fluctuate periodically.
b) the shape of the tortoise shell varied because the predators on the islands were different.
c) the particular shape of the shell was best suited for the island on which the tortoise was living.
d) tortoises who used their shells in special ways caused the shells to become larger, rounder, or flatter.
Answers: 1
Biology, 22.06.2019 02:00, karlaaag
Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.
Answers: 3
In 1831, charles darwin visited the galapagos islands. while observing the giant land tortoises that...
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