Front

What is an Aesthetic/Ethical Ecosystem Service?

Back

A service provided by ecosystems that contributes to the enjoyment, appreciation, and ethical considerations of nature, such as camping with family.

Front

What is the usable form of nitrogen for organisms?

Back

Nitrates are the usable form of nitrogen that organisms can utilize for growth and development.

Front

What is the primary way energy is lost from each trophic level?

Back

Energy is typically lost as heat during energy transfer between trophic levels.

Front

How many trophic levels are typically present in a food web?

Back

A food web can have multiple trophic levels, often ranging from 2 to 5 or more, depending on the ecosystem.

Front

What does the 90-10 rule in energy transfer state?

Back

In each transfer of energy, 10% of the energy moves on to the next trophic level while 90% is lost, primarily as heat.

Front

Define Direct Ecosystem Service.

Back

Direct Ecosystem Services are benefits obtained directly from ecosystems, such as food, water, and raw materials.

Front

Define Indirect Ecosystem Service.

Back

Indirect Ecosystem Services are benefits that support ecosystem functions, such as pollination, climate regulation, and water purification.

Front

What is the role of ammonium in the nitrogen cycle?

Back

Ammonium is a form of nitrogen that can be taken up by plants, but it is not the primary usable form for most organisms.

Front

What are nitrites and their significance in the nitrogen cycle?

Back

Nitrites are intermediate compounds in the nitrogen cycle, formed during the oxidation of ammonium, but are not the primary form used by most organisms.

Front

Explain the concept of trophic levels.

Back

Trophic levels represent the hierarchical positions in a food chain, where each level is defined by how organisms obtain energy.