17. What does the author refer to when he says 'rich and diverse land' at the beginning of paragraph 3?
Answer: B
The author refers to the large variety of Amazonian plants and animals.
The phrase 'rich and diverse land' alludes to the extensive variety of plants and animals found in the Amazon rainforest. This includes the significant number of birds and mammals, which highlights the rich biodiversity of the region.
A) 400 types of insects in the Amazon rainforest
While the presence of 400 types of insects contributes to the overall biodiversity, it does not encompass the full extent of what 'rich and diverse land' refers to. The term suggests a greater variety that includes plants and larger animals, not just insects.
B) 2,000 birds and mammals in the Amazon rainforest
This option accurately reflects what the author means by 'rich and diverse land.' The mention of 2,000 birds and mammals underscores the vast biodiversity present in the Amazon, illustrating the variety of life forms that thrive in this ecosystem.
C) The many kinds of plants growing in the Amazon rainforest
Although the numerous plant species contribute to the richness of the land, this option does not fully capture the diversity the author is referring to, which also includes a wide array of animal species, particularly birds and mammals.
D) The large variety of Amazonian plants and animals
This option is partially correct, as it encompasses the diversity of both flora and fauna. However, it is less specific than option B, which directly highlights the number of birds and mammals, making it the more precise reference the author intended.
Conclusion
The phrase 'rich and diverse land' specifically points to the large population of birds and mammals in the Amazon rainforest, as indicated by option B. While other options mention important aspects of biodiversity, they do not encapsulate the full richness of the land as effectively as the variety of birds and mammals does. Therefore, B is the most accurate choice in this context.