Explanation: The factors that affect the heart rate of an human is need for oxygen. If there is a need of oxygen then the heart will pump blood very fastly to meet the demand of oxygen.
When there is a normal supply of oxygen in the body then the heart pumps the blood in a normal heart rate.
Answer from: Quest
Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice
Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.
Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms
Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.