International Green Warrior Olympiad Class 12 Sample Paper

Q.1

Which of the following scenarios best exemplifies a successful conservation program aiming to protect endangered marine species?

1. A fishing community that continues to use unsustainable fishing practices in a protected marine reserve.
2. A coastal city that builds a new port in a key nesting area for sea turtles.
3.A campaign that educates fishermen about the importance of using turtle-excluder devices.
4. A factory that disposes of its waste directly into a marine sanctuary.

Q.2

In recent years, there has been a significant rise in the consumption of coal and oil for electricity generation and transportation. Which of the following effects is directly associated with this cause?

Q.3

A city is expanding its wastewater treatment infrastructure to improve the quality of treated water released into the environment. As part of this development, engineers and environmental experts are reviewing the different stages of wastewater treatment to ensure the most effective processing of sewage.

In the wastewater treatment process, which stage involves the breakdown of organic matter by microorganisms in the absence of oxygen?

Q.4

A group of farmers is considering using a new type of pesticide to control pests in their crops. What are some potential risks associated with the use of this pesticide?

1. The pesticide may harm beneficial insects that help pollinate crops
2. The pesticide may contaminate water sources, harming aquatic life
3. The pesticide may become resistant to pests over time, requiring higher doses

Q.5

Consider the Case study given below and answer the following question:

Case Study: Threats to Marine Life

In the North Atlantic, a large ship accident caused a massive oil spill. This spill polluted the ocean, covering the surface and spreading deep into the water. The oil mixed with floating plastic waste, created dangerous clumps that harmed marine animals and spread toxic chemicals.
Furthermore, the surrounding coastal regions experienced heavy industrial runoff from nearby factories and agricultural waste from farms that drain into rivers and streams, carrying excessive nutrients like nitrogen and phosphorus.
The combination of oil slicks, entangled plastic debris, and toxic algal blooms severely impacts the local fishing industry, leading to economic downturns and food scarcity in nearby communities reliant on marine resources. The spill also results in long-term ecological damage, affecting critical habitats such as coral reefs, seagrass beds, and estuaries, disrupting entire ecosystems.
This situation shows how different kinds of marine pollution, all come together to make things worse for ocean life and the people who depend on it. It is crucial for us to find ways to prevent and clean up these types of pollution to protect our oceans and the creatures living in them.

How can individuals and communities contribute to reducing marine pollution?

1. Minimise plastic waste by using reusable bags, bottles, and containers
2. Support sustainable fishing practices and choose seafood from certified sources
3. Ignoring beach clean-up efforts to avoid disturbing marine ecosystems

Q.6

Consider the case study given below and answer the following question:

Case Study: Threats to Marine Life

In the North Atlantic, a large ship accident caused a massive oil spill. This spill polluted the ocean, covering the surface and spreading deep into the water. The oil mixed with floating plastic waste, created dangerous clumps that harmed marine animals and spread toxic chemicals.
Furthermore, the surrounding coastal regions experienced heavy industrial runoff from nearby factories and agricultural waste from farms that drain into rivers and streams, carrying excessive nutrients like nitrogen and phosphorus.
The combination of oil slicks, entangled plastic debris, and toxic algal blooms severely impacts the local fishing industry, leading to economic downturns and food scarcity in nearby communities reliant on marine resources. The spill also results in long-term ecological damage, affecting critical habitats such as coral reefs, seagrass beds, and estuaries, disrupting entire ecosystems.
This situation shows how different kinds of marine pollution, all come together to make things worse for ocean life and the people who depend on it. It is crucial for us to find ways to prevent and clean up these types of pollution to protect our oceans and the creatures living in them.

In a region where algal blooms have caused a significant decrease in oxygen levels, which species is most likely to suffer the most adverse effects?

Q.7

You're going on a camping trip with your friends, but the nearby stream isn't exactly crystal clear. You're unsure about the type of filter that you should carry with you, so you consider the potential contaminants and location of the stream:

Sediment: The stream is a bit muddy after recent rains.
Bacteria: You're worried about potential pathogens like E. coli from upstream wildlife.
Location: The stream is in a very remote location away from industry or farms.

Which filter would be the best choice for your situation, considering the purification efficiency of each?

Q.8

At an educational tour of a nuclear power plant, students are learning about the primary energy transformation process used in this facility, specifically related to radioactive elements. What is the primary energy transformation process in this power plant?

Q.9

Carbon emissions from anthropogenic sources contribute to the greenhouse effect, trapping heat in the Earth's atmosphere. Which of the following best describes the mechanism by which carbon dioxide (CO₂) traps heat?

Q.10

In a coastal region, a team of environmental scientists is conducting research to identify potential carbon sequestration sites. They are particularly interested in ecosystems with waterlogged, anaerobic conditions.
Which forest ecosystem in the region is most likely to store large amounts of carbon in its soil?