Podcast
Questions and Answers
What is the main reason most food chains have five or less links?
What is the main reason most food chains have five or less links?
- Because energy used to make biomass remains available to the next level
- Because there are many chemical cycles like carbon, nitrogen, sulfur, and phosphorus
- Because 90 percent of the food chain's energy is lost at each level (correct)
- Because tertiary consumers are the top predators in the food chain
What is the main component of the sulfur cycle?
What is the main component of the sulfur cycle?
- Sulfur is a non-metal obtained as a byproduct after the production of natural gas (correct)
- Sulfur is a solid at room temperature
- Sulfur has an extremely bad odour like rotten eggs
- Sulfur makes up about 3% of the Earth's surface
What is the term for the comprehensive set of cyclical pathways by which a given nutrient moves through the environment?
What is the term for the comprehensive set of cyclical pathways by which a given nutrient moves through the environment?
- Cyclic Operations of Ecosystem
- Chemical Cycle
- Ecological Pyramid
- Biogeochemical Cycle (correct)
What is the relationship between the trophic levels in a food chain according to the 'ten percent law'?
What is the relationship between the trophic levels in a food chain according to the 'ten percent law'?
What is the term for the network of food chains representing the feeding relationships among organisms in an ecosystem?
What is the term for the network of food chains representing the feeding relationships among organisms in an ecosystem?
What is the term for the total amount of organic matter present in a trophic level?
What is the term for the total amount of organic matter present in a trophic level?
How do alterations in the carbon cycle impact the climate?
How do alterations in the carbon cycle impact the climate?
What is one of the consequences of human-induced alterations in the nitrogen cycle?
What is one of the consequences of human-induced alterations in the nitrogen cycle?
How do disruptions in the water cycle impact water availability?
How do disruptions in the water cycle impact water availability?
How do alterations in geophysical cycles affect ecosystems?
How do alterations in geophysical cycles affect ecosystems?
What are some economic repercussions of changes in geophysical cycles?
What are some economic repercussions of changes in geophysical cycles?
How do excess fertilizer use influence aquatic ecosystems?
How do excess fertilizer use influence aquatic ecosystems?
What is the main importance of the water cycle?
What is the main importance of the water cycle?
In what way does the carbon cycle support life?
In what way does the carbon cycle support life?
How does the water cycle contribute to the availability of freshwater for humans?
How does the water cycle contribute to the availability of freshwater for humans?
What role does the carbon cycle play in climate regulation?
What role does the carbon cycle play in climate regulation?
How does the water cycle contribute to the growth of crops and plants?
How does the water cycle contribute to the growth of crops and plants?
Why is the carbon cycle considered the chemical backbone of life on Earth?
Why is the carbon cycle considered the chemical backbone of life on Earth?
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