问题详情

Directions: Select from the seven phrases below the two phrases that correctly characterize northern Europe during the twelfth century and the three phrases that correctly characterize southern Europe. Two of the phrases will NOT be used. Write your answer choices in the spaces where they belong. You can either write the letter of your answer choice or you can copy the sentence. Northern Europe Southern Europe Answer Choices [A]Democratic social structure [B]Sophisticated culture [C]Small wealthy states [D]Famous kings and queens [E]Extensive communication systems [F]Highly literate population [G]Large military forces

According to Gleason in paragraph 3, the occurrence of a species in a particular community is influenced by

A．unpredictable events

B．how individualistic the species is

C．the number of other species present

D．the tolerance of other species to stresses

请帮忙给出正确答案和分析，谢谢！