After 1500, the Initial Change That Brought Pygmies and Bantu

question 16

Multiple Choice

After 1500, the initial change that brought Pygmies and Bantu peoples into closer contact was

• A) the introduction of iron tools and banana cultivation
• B) a prolonged drought
• C) the arrival of Europeans
• D) the introduction of the horse

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Definitions:

Oxygen

A chemical element with the symbol O, essential for cellular respiration in most living organisms and a major component of Earth's atmosphere.

Capillary Walls

The thin, permeable barriers of capillary blood vessels that facilitate the exchange of water, oxygen, carbon dioxide, and other nutrients and wastes between blood and tissues.

Alveolar Walls

The thin tissue membranes in the lungs, forming alveoli that facilitate gas exchange between the air and blood.

Blood PH

The measure of acidity or alkalinity of the blood, vital for maintaining homeostasis, with a normal range of approximately 7.35 to 7.45.