What are terrestrial ecosystems?
Explanation: The correct answer is C) Ecosystems found on land. Terrestrial ecosystems refer to the ecosystems found on land, including forests, grasslands, deserts, tundras, and other land-based habitats. These ecosystems are characterized by distinct plant and animal communities and play a crucial role in supporting biodiversity, regulating the climate, and providing various ecosystem services.
What is the primary factor influencing the distribution of terrestrial ecosystems?
Explanation: The correct answer is B) Precipitation. Precipitation, including rainfall and snowfall, is the primary factor influencing the distribution of terrestrial ecosystems. The amount and distribution of precipitation determine the availability of water, which is critical for plant growth and ecosystem functioning. Different levels of precipitation support the development of distinct terrestrial ecosystems, such as rainforests in regions with high rainfall and deserts in regions with low rainfall.
Which of the following is an example of a terrestrial ecosystem?
Explanation: The correct answer is C) Savanna ecosystem. Savanna is an example of a terrestrial ecosystem characterized by grasslands with scattered trees and shrubs. It is typically found in tropical or subtropical regions with a pronounced dry season. Other examples of terrestrial ecosystems include forests, deserts, tundras, and alpine meadows.
What is the role of terrestrial ecosystems in the carbon cycle?
Explanation: The correct answer is B) They absorb carbon dioxide from the atmosphere. Terrestrial ecosystems, especially forests, play a vital role in the carbon cycle. Through the process of photosynthesis, plants absorb carbon dioxide from the atmosphere and convert it into organic matter. This process helps to mitigate climate change by removing carbon dioxide, a greenhouse gas, from the atmosphere and storing it in vegetation and soils.
How are human activities affecting terrestrial ecosystems?
Explanation: The correct answer is D) All of the above. Human activities have a significant impact on terrestrial ecosystems. Deforestation and habitat destruction result in the loss of biodiversity and the disruption of ecosystem processes. Pollution and contamination, such as air and water pollution, can degrade ecosystems and harm plant and animal life. Climate change, driven by greenhouse gas emissions, alters temperature and precipitation patterns, affecting the distribution and functioning of terrestrial ecosystems.