Choose the wrong statements

Options

A. natality and immigration increases the population density
B. mortality and emigration decreases the population density
C. adverse condition does not effect the population density
D. food availality predation pressure affect population density

Answer

To solve the question "Choose the wrong statements," we will analyze each statement provided in the options to determine which one is incorrect.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which statements about population density are incorrect.

2. **Analyze the First Statement**:
- **Statement**: "Natality and immigration increases the population density."
- **Analysis**: Natality (birth rate) and immigration (movement of individuals into a population) both contribute to an increase in the number of individuals in a given area. Therefore, this statement is **correct**.

3. **Analyze the Second Statement**:
- **Statement**: "Mortality and emigration decreases the population density."
- **Analysis**: Mortality (death rate) and emigration (movement of individuals out of a population) both lead to a decrease in the number of individuals in a given area. Hence, this statement is also **correct**.

4. **Analyze the Third Statement**:
- **Statement**: "Adverse conditions do not affect the population density."
- **Analysis**: Adverse conditions (like natural disasters, lack of food, etc.) can significantly impact the survival and reproduction of individuals in a population, thus affecting population density. Therefore, this statement is **incorrect**.

5. **Analyze the Fourth Statement**:
- **Statement**: "Food availability and predation pressure affects population density."
- **Analysis**: Both food availability and predation are critical factors that influence population density. If food is scarce, population density may decrease, and high predation pressure can also reduce the population size. Thus, this statement is **correct**.

6. **Conclusion**: The only incorrect statement among the options is the third one: "Adverse conditions do not affect the population density."

### Final Answer:
The wrong statement is: **"Adverse conditions do not affect the population density."**