heat exchange

dreamv wrote:Countercurrent heat exchange, a circulatory arrangement in which warm blood leaving the body core passes cooler blood returning from the extremities, allows for heat to pass into regions where little warmth or heat mechanisms exist.

patanjali.purpose wrote:

dreamv wrote:Countercurrent heat exchange, a circulatory arrangement in which warm blood leaving the body core passes cooler blood returning from the extremities, allows for heat to pass into regions where little warmth or heat mechanisms exist.

A. little warmth or heat mechanisms exist
(Problem: LITTLE...EXIST. Heat Mechanism cann go with little; use of OR requires EXISTS)

B. little warmth or hear mechanisms exists
(Problem: LITTLE...EXISTS. Heat Mechanism cann go with little; use of OR requires EXISTS for warmth and EXIST for mechanisms)

c. few heat mechanisms and little warmth exists
use of AND requires EXIST)

D. there is little warmth or heat mechanisms available
(Problem: LITTLE...EXISTS. Heat Mechanism cann go with little; use of OR requires IS for warmth and ARE for mechanisms)

E. there are few heat mechanixms and little available warmth

IMO E