Maritime satellite phone (because it is dangerous to go to the rainforest), compressed food, rope. This is very important. Don't underestimate its usefulness. Also, be sure to bring sleeping bags and tents on high ground to prevent flash floods. The rest depends on exploration skills.
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Tropical rain forest is a common forest ecosystem near the equator, mainly distributed in Southeast Asia, northern Australia, Amazon River basin in South America, Congo River basin in Africa, Central America and many Pacific islands.
Tropical rain forest is the most resistant and stable ecosystem on the earth, with hot climate all year round, abundant rainfall, insignificant seasonal differences and rapid succession of biological communities, and it is the habitat of more than half of the world's animal and plant species.
The tropical rain forest is undoubtedly one of the most precious resources that the earth gives to all living things on earth. At present, more than 25% of modern drugs are extracted from rainforest plants, so the rainforest is called "the largest pharmacy in the world". At the same time, because many rainforest plants have a particularly strong ability to purify the earth's air through photosynthesis, the oxygen produced by Amazon rainforest alone accounts for 1/3 of the global total oxygen, so it has the reputation of "the lungs of the earth".