The Depth from the Surface of Earth to the Top

question 302

Multiple Choice

The depth from the surface of Earth to the top of its liquid core is about _____ km.

• A) 2900
• B) 6400
• C) 5000
• D) 30

Understand the composition of rich agricultural soils.

Identify key elements and their roles in plant nutrition and growth.

Describe the interactions between plants and symbiotic organisms, including their benefits and mechanisms.

Explain the role of nitrogen-fixing bacteria in plant nutrition and how different plants interact with these organisms.

---

Definitions:

pH Strip

A small piece of paper treated with a chemical indicator that changes color to show the acidity or alkalinity of a solution when dipped into it.

Thrombophlebitis

Inflammation of a vein followed by formation of a blood clot.

PACU

stands for Post-Anesthesia Care Unit, a specialized care area where patients are monitored and recover from the effects of anesthesia following surgery.

Ambulate

The act of walking or moving from one place to another, often used in medical contexts to describe a patient's ability to move independently or with assistance.