Answer:
Pneumotaxic centre in the pons region of the brain can moderate functions of the respiratory rhythm centre. Neural signals from this centre can reduce the duration of inspiration and thereby alter the respiratory rate. A chemosensltive area is situated adjacent to the rhythm centre to make necessary adjustments in the respiratory process. Receptors associated with aortic arch and carotid artery also can recognise changes in CO
2
and H+ concentration and send necessary signals to the rhythm centre for remedial actions. The role of oxygen in the regulation of respiratory rhythm is quite insignificant.
So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
Explanation:
Valence Electrons are on the outer shell of a atom. The outer shell is also known as the valence shell so outer electrons or valence electrons are on the outer shell or valance shell.
Answer;
Zone II
The area most significantly subjected to the ecological principles suggested by park is Zone II.
Explanation;
Zone II also the zone in transition, is appropriately named since it was truly in a state of transition from residential to industrial, primarily because it was the area of the city in which businesses and factories were invading residential areas. was the area that was most significantly subjected to the ecological principles, Park suggested: invasion, domination, recession, and succession.
Answer:
D. elimination of digestible wastes.
Explanation:
Digestion is the breakdown of large food components into smaller size in the body.
The digestive system functions includes the chemical breakdown of food, mechanical breakdown of food, absorption of food molecules and elimination of waste products.
The digestive tract can be compare to a tube with two openings - mouth and anus. The process of digestion starts from the mouth ( ingestion of food) through the oesophagus down to the stomach (where the food is mixed with digestive juices) then to the small intestine (this is where most of the digestion process takes place) then to the large intestine and finally to the anus where undigested wastes are eliminated