Answer:
A scout is a group of children
Explanation:
It's usually 10-18 years of age participating in world-wide
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<span>The correct answer is mental set.
In psychology, when we say 'mental set,' we mean a set of behaviors and solutions to particular problems that have worked before for us. So, when we are faced with a new problem, we will try to use the solutions that we have previously successfully used in the past, and those solutions are part of our mental set. Instead of trying to find new solutions, we will rather resort to those we have already tested. </span>
Because this factor normally varies, the most important variable that influences the diffusion of respiratory gases is the concentration gradient. The air in the lungs has a higher concentration of oxygen than that of oxygen-depleted blood and a lower concentration of carbon dioxide. This concentration gradient allows for gas exchange during respiration.
Gas exchange during respiration occurs primarily through diffusion. Diffusion is a process in which transport is driven by a concentration gradient. Gas molecules move from a region of higher concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
Ventilation maintains concentration gradients of oxygen and carbon dioxide between the air in the alveoli and blood flowing in adjacent capillaries.
Learn more about concentration gradient here:
brainly.com/question/28164385
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