10 most difficult nature riddles A list of ten (out of 259) nature related questions that are the most often answered incorrectly Nature quiz How much of Australia coastline is desertous? (out of total 21,262 miles/34,218 km)140 miles (180 km). More than 40% of Australia's land is classified as desert, but almost all of it is located inland. The Great Sandy Desert is the only one to extend to the coast, forming the long sweep of the Eighty Miles Beach (which is actually 140 miles long).very hard 22% 140 miles (180 km)140 miles (180 km)22%1,000 miles (1,600 km)1,000 miles (1,600 km)13%3,000 miles (4,800 km)3,000 miles (4,800 km)23%14,000 miles (22,500 km)14,000 miles (22,500 km)39%Created by: Cleo. Statistics based on 4331 answers in 2 languages »geography of Australia riddles » Which animals are the most threatened by a prion disease?Sheep. Scrapie is infectious and incurable. Recent studies suggest prions may be spread through urine and persist in the environment for decades. Scrapie occurs in Europe and North America, but to date, Australia and New Zealand (both major sheep-producing countries) are scrapie-free.very hard 23% cattlecattle33%catscats37%sheepsheep23%ducksducks5%Created by: ex-terminator. Statistics based on 5102 answers in 2 languages »diseases riddles » Aside from cattle, which animal provides most milk used by humans?Buffalo. Water buffaloes provide 11% of the world's milk, which is much more than goats (2%, third place). Buffalo's milk contains higher levels of total solids, crude protein, fat than cow milk; it gives therefore more cheese, butter and other dairy products. The top buffalo milk producers are India and Pakistan. very hard 26% goatgoat45%buffalobuffalo26%sheepsheep20%camelcamel8%Created by: globalquiz.org. Statistics based on 6163 answers in 2 languages »milk riddles » Which animal doesn't belong to odd-toed ungulates?Rhinoceros. Odd-toed ungulates include the horse, the tapir, and the rhinoceros.very hard 26% hippopotamushippopotamus26%rhinocerosrhinoceros26%camelcamel15%okapiokapi31%Created by: Paweł Kołodziejczyk. Statistics based on 2872 answers in 2 languages »biology riddles » Where do pangolins live?Africa and Asia. Pangolins are found in India, China, Indonesia and Africa south of Sahara.very hard 27% Central AmericaCentral America17%AustraliaAustralia34%Africa and AsiaAfrica and Asia27%MadagascarMadagascar20%Created by: Luca Biaggi. Statistics based on 2878 answers in 2 languages »mammals riddles » Gunung Mulu national park, a place with the most extensive cave system in the world, is located in which country?Malaysia. Gunung Mulu national park is located in the eastern province of Sarawak, Malaysia. It is located on Borneo, near the southern border of Brunei. Gunung Mulu National Park has the largest known natural chamber or room – Sarawak Chamber. It is 700 m (2,300 ft)) long, 396 m (1,299 ft) wide and at least 70 m (230 ft) highvery hard 28% MalaysiaMalaysia28%ThailandThailand23%CambodiaCambodia29%IndonesiaIndonesia18%Created by: Pranav Yalamanchili. Statistics based on 2273 answers in 4 languages »geology riddles » Where do the largest among all crocodilians (crocodiles, alligators, caimans, gharials) live?In Southeast Asia. The saltwater crocodile is the largest of all living reptiles, reaching up to 6.3 m and 1,360 kg. It may be found from Northern Australia to the eastern coast of India.very hard 29% in Southeast Asiain Southeast Asia29%in Floridain Florida16%in South Australiain South Australia24%in the Nilein the Nile29%Created by: Kasia. Statistics based on 5341 answers in 2 languages »carnivores riddles » Who was the first to create a zoo and botanical garden for scientific study?Aristotle. Throughout his conquests of Asia, Alexander the Great collected many plant and animal specimens for Aristotle’s research. This allowed Aristotle to develop in Athens the first zoo and botanical garden in existence.very hard 29% AristotleAristotle29%GalileoGalileo10%Carl LinnaeusCarl Linnaeus31%Charles DarwinCharles Darwin29%Created by: globalquiz.org. Statistics based on 3593 answers in 4 languages »science riddles » Where could you expect to find a wild Bactrian Camel?In Southern Siberia. The wild form of the Bactrian camel live in remote regions of the Gobi and Taklamakan Deserts, migrating from the desert to rivers in Siberia during winter.very hard 29% in Egyptin Egypt13%in Saudi Arabiain Saudi Arabia26%in Southern Siberiain Southern Siberia29%in Afghanistanin Afghanistan30%Created by: globalquiz.org. Statistics based on 4020 answers in 4 languages »zoogeography riddles » For what main reason do chameleons change color? As a social signal to othe chameleons. Color change in chameleons has various functions, depending on the species, but the most common is social signaling. Only few species, such as Smith's dwarf chameleon, also adjust their colors for camouflage. very hard 29% to match their surroundingsto match their surroundings61%as a social signal to othe chameleonsas a social signal to othe chameleons29%their skin change color when pressedtheir skin change color when pressed2%chameleons do not change colorchameleons do not change color5%Created by: globalquiz.org. Statistics based on 4295 answers in 4 languages »reptiles riddles » Play nature quiz and see all the questions.