MC (URGENT)

答案要有根據!
1. Which of the following is NOT a characteristic of rainforests?
A. The shrub layer is dark.
B. There are many plant species but few animal species.
C. Vegetation cover is dense.
D. Plants generally form a distinctive four-layer structure.

2. "The trees have straight and thick trucks supported by buttress roots." Which layer does this statement describe?
A. Shrub layer and undergrowth
B Young tree layer
C Emergent layer
D Canopy layer