What Is the Main Difference Between the a Horizon and the C

question 71

Multiple Choice

What is the main difference between the A horizon and the C horizon?

• A) particle size
• B) organic content
• C) clay content
• D) silica content

Identify antigen-presenting cells and their function within the immune system.

Understand the process of negative and positive selection of lymphocytes.

Distinguish between cell-mediated and antibody-mediated immunity and their components.

Recognize the significance of MHC molecules in immune responses.

---

Definitions:

Characteristic

A trait or feature that distinguishes an organism or object from another.

Insectivorous Plants

Plants that derive some or most of their nutrients by trapping and consuming insects and sometimes other small animals.

Nutrient-Rich Soil

Soil that contains high levels of essential nutrients for plant growth, such as nitrogen, phosphorus, and potassium.

Modified Leaves

Leaves that have evolved into different forms or structures to perform specialized functions, such as protection, climbing, storage, or reproduction.