Lakes containing excess of bacterial nutrients called

Options

A. Polluted lakes
B. Eutrophic lakes
C. Fertile lakes
D. Green lakes

Answer

To answer the question "Lakes containing excess of bacterial nutrients are called," we can follow these steps:

### Step 1: Understand the Concept of Eutrophication
Eutrophication is a process where water bodies, such as lakes, become overly enriched with nutrients, particularly nitrogen and phosphorus. This often results from agricultural runoff, sewage discharge, or other human activities.

**Hint:** Think about how nutrients enter water bodies and what effects they have on aquatic ecosystems.

### Step 2: Identify the Effects of Eutrophication
The excess nutrients lead to an overgrowth of algae, known as algal blooms. These blooms can cover the surface of the water, blocking sunlight and disrupting the ecosystem.

**Hint:** Consider what happens to the aquatic life when sunlight is blocked and how this affects oxygen levels in the water.

### Step 3: Recognize the Consequences of Algal Blooms
As the algae die and decompose, the process consumes a significant amount of oxygen in the water, leading to hypoxic (low oxygen) conditions. This can result in the death of fish and other aquatic organisms.

**Hint:** Reflect on the importance of oxygen for aquatic life and what happens when it is depleted.

### Step 4: Define the Types of Lakes
Lakes that experience this excessive nutrient enrichment and the resulting algal blooms are referred to as "eutrophic lakes." In some cases, if the enrichment is extreme, they may be referred to as "hypertrophic lakes."

**Hint:** Remember the terminology used to describe lakes based on their nutrient levels.

### Final Answer
Lakes containing excess bacterial nutrients are called **eutrophic lakes** (or **hypertrophic lakes** if the nutrient levels are extremely high).

---