The amount of biogenetic nutrients present in the abiotic environment per unit area at any time is called.

Options

A. Standing state
B. Standing crop
C. NPP
D. Nutrients immobilization

Answer

To solve the question, "The amount of biogenetic nutrients present in the abiotic environment per unit area at any time is called," we will analyze the options provided and determine the correct term based on the definitions of each.

**Step 1: Understand the question.**
The question asks for a specific term that describes the quantity of biogenetic nutrients in the abiotic (non-living) environment per unit area at a given time.

**Step 2: Analyze the options.**
1. **Standing state**: This term refers to the amount of nutrients or non-living matter present in a given area at a specific time. It includes the nutrients available in the soil and water.
2. **Standing crop**: This term refers to the biomass of living organisms (plants, animals) in a particular area at a specific time, not the abiotic environment.
3. **NPP (Net Primary Productivity)**: This is the measure of the energy produced by autotrophs (producers) after accounting for the energy they use in respiration. It does not refer to the abiotic nutrient content.
4. **Nutrients immobilization**: This process refers to the conversion of inorganic nutrients into organic forms, which is not the same as measuring the amount of nutrients present.

**Step 3: Identify the correct answer.**
Based on the definitions:
- The correct answer is **standing state**, as it specifically refers to the amount of biogenetic nutrients present in the abiotic environment per unit area at any time.

**Final Answer:**
The amount of biogenetic nutrients present in the abiotic environment per unit area at any time is called **standing state**.

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