Answer:
The correct answer is carbon dioxide.
Explanation:
Respiration (physical) process involves inhalation and exhalation of oxygen and carbon dioxide respectively in between the air and into the lungs to the blood. If the brain receptors sense the excess amount of carbon dioxide in the blood, they send signals the body to promote ventilation. So, the most important chemical regulator of respiration is carbon dioxide that determines the respiratory rate.
An increase in carbon dioxide concentration in blood results in a decreasing pH level of the blood, causing the person to increase his rate of ventilation.
Thus, the correct answer is carbon dioxide.
The woman having extremely poor nutrition in the first and last trimester of pregnancy may cause bad condition of the mother and child later resulting in complications.
The nutritional status of a woman before and during pregnancy plays a vital role in fetal growth and development. The basic principles of healthy eating remain the same, though requirements for some nutrients (eg iron, folic acid) may increase. Pregnancy is a period when nutrient intake is extremely important to meet the mother’s usual requirements, needs of the growing fetus, and to store nutrients required for fetal development and lactations. So, better nutrition is related to improved infant, child, and maternal health ,stronger immune systems, safer pregnancy and childbirth, lower risk of non-communicable diseases.
Learn more about Pregnancy here-
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Answer:
k
Explanation:
Answer to the owner and request for the first time
Answer:The earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules.
Explanation:
The earliest stages in spermatogenesis can be found in the basal side of the seminiferous tubule. The immature spermatides undergo differentiation. The mature spermatids are nearest to the center of the tubule but the tail extended into the lumen.
Answer:
surface of an epithelial cell
Explanation:
