Question : Which ecosystem is the only one that does not thrive on solar energy?

Option 1: Marine organisms

Option 2: Phytoplanktons

Option 3: Deep-sea hydrothermal ecosystem

Option 4: Nitrogen-fixing bacteria

Question : In ecology, _________ is determined by dividing the biomass per unit area by the age of the forest ecosystem.

Option 1: biomass density

Option 2: biomass size

Option 3: biomass energy flow

Option 4: biomass productivity

Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option for each blank.
The Amazon rainforest is an awe-inspiring natural wonder that (1)____ across several South American countries, including Brazil, Peru, Colombia, and Ecuador. Covering an (2)_____ area of 5.5 million square kilometres, it is the largest tropical rainforest on Earth. The Amazon jungle is (3)______ for its remarkable biodiversity, harbouring an astonishing array of plant and animal species that are still being discovered and studied. The dense vegetation of the jungle creates a (4)______ and complex ecosystem, supporting countless species and providing crucial ecosystem services such as carbon sequestration and climate regulation. It is also home to (5)_______ communities that have thrived within its rich confines for centuries, preserving their traditions and deep connection to the land.
Question:
Select the most appropriate option to fill in the blank number 2.

Option 1: gauged

Option 2: rated

Option 3: estimated

Option 4: evaluated

Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option for each blank.
The Amazon rainforest is an awe-inspiring natural wonder that (1)_________ across several South American countries, including Brazil, Peru, Colombia, and Ecuador. Covering an (2)_____ area of 5.5 million square kilometres, it is the largest tropical rainforest on Earth. The Amazon jungle is (3)_______ for its remarkable biodiversity, harbouring an astonishing array of plant and animal species that are still being discovered and studied. The dense vegetation of the jungle creates a (4)________ and complex ecosystem, supporting countless species and providing crucial ecosystem services such as carbon sequestration and climate regulation. It is also home to (5)_______ communities that have thrived within its rich confines for centuries, preserving their traditions and deep connection to the land.
Question:
Select the most appropriate option to fill in the blank number 4.

Option 1: vigour

Option 2: spirited

Option 3: vibrant

Option 4: lavish

Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option for each blank.
The Amazon rainforest is an awe-inspiring natural wonder that (1)____ across several South American countries, including Brazil, Peru, Colombia, and Ecuador. Covering an (2)_____ area of 5.5 million square kilometres, it is the largest tropical rainforest on Earth. The Amazon jungle is (3)______ for its remarkable biodiversity, harbouring an astonishing array of plant and animal species that are still being discovered and studied. The dense vegetation of the jungle creates a (4)______ and complex ecosystem, supporting countless species and providing crucial ecosystem services such as carbon sequestration and climate regulation. It is also home to (5)_______ communities that have thrived within its rich confines for centuries, preserving their traditions and deep connection to the land.
Question:
Select the most appropriate option to fill in the blank number 1.

Option 1: reaches

Option 2: lengths

Option 3: amounts

Option 4: spans