The great biological exchange, also called the columbian exchange, included the global transfer of various biological and social elements among europe, the americas, and africa. these included the introduction

The transfer of biological and social elements, such as plants/food (Rice, wheat, barley, oats, wine grapes, melons, coffee, olives, bananas, Kentucky Blue grass, daisies, and dandelions) , animals (Horses, cattles, pigs, sheep goats, and chickens) , people, diseases (Smallpox, typhus, diphtheria, bubonic plague, malaria, yellow fever, and cholera), and cultural practices.

Explanation:

im back lol i heard you where asking for me

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .