The cause of the Cambrian explosion is still debated. There are many theories that attempt to answer this
question. Environmental changes may have created a more suitable environment for animal life. Examples
of these changes include rising atmospheric oxygen levels and large increases in oceanic calcium
concentrations that preceded the Cambrian period. Some scientists believe that an expansive, continental
shelf with numerous shallow lagoons or pools provided the necessary living space for larger numbers of
different types of animals to co-exist. There is also support for theories that argue that relationships
between species, such as changes in the food web, competition for food and space, and predator-prey
relationships, were ready to promote a sudden massive coevolution of species. Theories that attempt to
explain why the Cambrian explosion happened must be able to provide valid reasons for the massive
animal diversification, as well as explain why it happened when it did. There is evidence that both supports
and refutes each of the theories described above, and the answer may very well be a combination of these
and other theories.
이 지문에서
4. According to paragraph 2, which of the following is true about the theories regarding the
Cambrian period?
a. Most scientists believe that a large continental shelf could accommodate a vast variety of animals
b. Evidence suggests that a variety of factors allowed for a rapid coevolution of species
c. Many of the theories regarding this period have been refuted due to a lack of evidence
d. There are only a few theories that attempt to explain what caused the Cambrian explosion
라는 문제인데
There is also support for theories that argue that relationships
between species, such as changes in the food web, competition for food and space, and predator-prey
relationships, were ready to promote a sudden massive coevolution of species.
라고 써 있기 때문에
답이 Evidence suggests that a variety of factors allowed for a rapid coevolution of species라고 합니다만.. 여기서 support를 저는 학자들의 지지라고 해석했기 때문에 증거는 없었으니 B가 답이 아니라고 생각했는데요.. support가 지지가 될 수도, 증거가 될 수도 있으니 그건 해석하기에 따라 답이 달라질 수 있는게 아닌가요..?ㅠㅠ 진짜 모르겠어서 글씁니다.