Although Brazil has extensive rivers (e.g., the Amazon and its tributaries), the country lacks a coherent, continuous national waterway network. Navigable reaches exist, but large-scale integration is limited.
Many rivers traverse dense rainforest. Thick riparian vegetation, difficult access, and a lack of robust port infrastructure reduce navigability. Soft banks and seasonal erosion complicate durable port/terminal construction.
Marked seasonal fluctuations in discharge, plus rapids and waterfalls, disrupt continuous navigation. Overcoming these barriers (locks, dredging, channel training) demands heavy capital expenditure that can be hard to justify when traffic demand is sparse or dispersed.
As a result, despite the vast river system, waterways are underutilized relative to roads and rail. Localized corridors function, but they don’t amount to a nationwide, high-capacity inland water transport grid.
\[ \textbf{Brazil’s waterways are underdeveloped due to rainforest access limits, seasonal flows, rapids/waterfalls, and high infrastructure costs.} \]

निम्नलिखित मुहावरों में से किसी एक मुहावरे का अर्थ लिखकर वाक्य में प्रयोग कीजिए :
(i) मुँह लाल होना
(ii) टाँग अड़ाना
अथवा
अधोरेखांकित वाक्यांश के लिए कोष्ठक में दिए मुहावरों में से उचित मुहावरे का चयन करके वाक्य फिर से लिखिए :
(तिलमिला जाना, काँप उठना)
पंडित बुद्धिराम काकी को देखते ही \underline{क्रोध में आ गए}।
Information Transfer: Answer the following question based on the given tree-diagram.