Suppose the World Demand for Iron Is About 420,000,000 Tons

question 3

Multiple Choice

Suppose the world demand for iron is about 420,000,000 tons per year. The known global reserves are 100,000,000,000 tons. What is the static reserve for iron?

• A) 93.3
• B) 128.4
• C) 238.1
• D) 420.0

---

Definitions:

Visual Acuity

The clarity or sharpness of vision, typically measured as the ability to discern letters or numbers at a given distance according to a fixed standard.

Long-Term Potentiation (LTP)

A long-lasting enhancement in signal transmission between two neurons that results from stimulating them synchronously, believed to be a cellular mechanism underlying learning and memory.

Postsynaptic Neuron

The neuron located after the synaptic gap that receives a neurotransmitter signal from a presynaptic neuron in neuronal communication.

Sympathetic Activation

The part of the nervous system that increases alertness, mobilizes energy, and prepares the body for action.