In the 1840s,John Deere Introduced Significant Improvements to the

question 70

Multiple Choice

In the 1840s,John Deere introduced significant improvements to the

• A) tractor.
• B) thresher.
• C) cotton gin.
• D) reaper.
• E) plow.

---

Definitions:

Myelin

Protective insulation that surrounds parts of neurons, increasing the speed of transmission of electrical impulses along brain cells.

Synapse

The junction between two neurons or a neuron and a muscle where electrical or chemical signals are transmitted.

Dendrite

A branched extension of a neuron that receives impulses from other neural cells and transmits them towards the cell body.

Primitive Learning

A basic form of learning that occurs early in life, often driven by instinct and the need to adapt to the environment, without the need for conscious thought.