Cuba is one of the world's leading producers of sugarcane. consequently, sugar is its main export. why is this a potential problem?
many other countries in latin america, such as brazil, are also top global producers of sugarcane.
a sudden drop in sugar prices or in production caused by a natural disaster could cripple cuba's economy.
many latin american countries have unstable governments and economies.
world sugar consumption is expected to drop sharply in a few years, as people become more health-conscious.

the wrong statement is - c. a desert had more biodiversity than a marsh.

the deserts are one of the places of the planet where there's the least biodiversity. the reasons for that are the climate and the lack of food sources, which hampers both the number of the species that can survive in it, and the number of the individuals in the species itself.

the marshes, on the other hand, are places where there's perfect conditions for lots of organisms to thrive. the temperature is moderate and nice, the amount of water and the food sources are on a high level, so there's an abundance of both plant and animal life in them.

in 1948, swiss engineer/amateur mountaineer george de mestral went hiking in the woods with his dog. when they arrived back home, george found burrs stuck to his dog’s fur. this inspired him to create velcro.

explanation: