Answer:
When we breathe, the air goes through the trachea and bronchi and splits at the tracheas base with one entering each lung. The air divide itself into the bronchioles. Then diffusion happens by swapping the CO2 in the capillaries with O2 in the airsacks. The oxygen hemoglobin gets transported to all of the bodyand the Co2 is exhaled.
Explanation:
Blood sugarYour blood sugar levels
I believe it is the nervous system but I'm not 100% sure
Answer:
Concrete operational stage starts at age seven and continues to age 11
(7-11).
This stage is characterized by logical thought.
An important development during this stage is mastery of the concept of conservation as well the ability to reason logically.
Children have learned that pouring liquid from a tall, narrow glass into a shallow dish doesn't reduce the amount of fluid.
During this stage , a child's thought starts to grasp the concept of time , space and numbers. The child starts using categories and principles.
