Environmental Science and Technology Quiz

Shark liver oil is the correct answer - certain shark species (particularly deep-water sharks like dogfish) are commercially harvested for their livers to produce shark liver oil, which is rich in vitamins and historically used in supplements. The question phrasing could be clearer about specifying shark liver oil.

Southern India has the largest elephant population, with states like Karnataka, Kerala, Tamil Nadu, and Andhra Pradesh hosting significant numbers of Asian elephants in their forests and wildlife sanctuaries. The region's favorable climate, extensive forest cover, and protected areas support large elephant populations.

Polar bears are critically endangered due to global warming because they depend on Arctic sea ice for hunting seals, their primary food source. As sea ice melts and breaks up earlier each year, polar bears have reduced hunting opportunities and face starvation, making them emblematic of climate change impacts.

Plant cells are the only option among these that contain both plastids (like chloroplasts for photosynthesis) and large central vacuoles. Plastids are membrane-bound organelles unique to plant and algal cells, while vacuoles store water, nutrients, and help maintain cell structure.

HTTP stands for Hypertext Transfer Protocol, the foundational communication protocol of the World Wide Web. It defines how messages are formatted and transmitted between web servers and browsers, enabling the retrieval and display of web pages and resources.

Internet connection speed is measured in Kbps (kilobits per second) or Mbps (megabits per second), indicating the data transfer rate. RAM measures computer memory, Megabytes measure storage capacity, and MHz measures processor speed - none of these define network access speed.

Hotmail.com was a popular free web-based email service. Linux.org is about the Linux operating system, syvum.com is an educational site, and gre.org provides information about the GRE exam - none offer email account services.

Google is fundamentally a search engine that indexes web pages and provides search results. While Google now offers many services including chat and image search, its core identity and function is as a search engine, not a math number or image directory.

Endemic species are those found naturally only in a particular geographic location and nowhere else. Extinct species no longer exist, endangered species are at risk of extinction, and flora/fauna simply refer to plants and animals without geographic restriction.

Biodiversity refers to the variety of all living organisms - plants, animals, fungi, and microorganisms - within an ecosystem or on Earth. 'Sum of the living creatures' is the closest approximation. 'Group of animals' is too narrow, while flora and fauna refer only to plants and animals respectively.

The Sundarbans in West Bengal is India's largest and most densely populated mangrove ecosystem, spanning approximately 4,262 sq km. This UNESCO World Heritage Site forms where the Ganges-Brahmaputra delta meets the Bay of Bengal, supporting incredible biodiversity including the Royal Bengal Tiger. Sundarbans represents both extensive area and high ecological density.

The first Earth Summit (UN Conference on the Human Environment) was held in Stockholm, Sweden, in June 1972. This historic conference established foundational principles for global environmental governance and led to the creation of the United Nations Environment Programme (UNEP). Stockholm set the precedent for future environmental conferences.

The ozone layer thinning, commonly called the 'ozone hole', is most severe over Antarctica due to unique atmospheric conditions. During the Antarctic spring, extreme cold and polar vortex winds create chemical reactions that destroy ozone molecules. While ozone depletion occurs globally, the most dramatic thinning happens over the South Pole.

HTML (HyperText Markup Language) is primarily used to create and structure web pages. It defines the content and layout of web documents. HTML is not used for plotting graphs, language translation, or solving equations - those require different tools.

A modem (Modulator-Demodulator) converts digital signals to analog for transmission over phone lines, then back to digital. Option D has 'Demodulater' typo but is the intended correct answer. The other options are nonsense acronyms unrelated to modems.