<span>No, you can not conclude Vitamin C use reduces allergies because this could be correlation, without causation. Mothers who used vitamin C may have qualities that decreased allergies, like lower smoking rates or improved pre-natal care. There also needs to be a control group to validate the intervention data.</span>
<span>When you get excited and your adrenaline starts pumping, your body is not experiencing evolution, so f</span>alse
Answer:
National Geographic estimates that hair dryers emit, on average, 57 pounds of carbon dioxide (CO2) into the atmosphere every year. That's far less than the average of 727 pounds of CO2 emitted by refrigerators, but this still has a negative environmental impact on our planet.
<h2>
Please mark me as brainliest</h2>
Answer:
Autonomic regulation of heart is via two reflex centers that are found in medulla oblongata
Explanation:
Medulla oblongata contain long stem that makes the upper part of brain case and this is a cone shaped structure which is responsible for autonomic regulation like controlling heart rate,vomiting,respiration,breathing etc.
The heart rate is controlled by autonomic nervous system that are mainly sympathetic and parasympathetic nervous system that releases hormones like catecholamine (epinephrine and non epinephrine) which helps in controlling the heart rate.
Medulla oblongata mainly connects the brain with the spinal cord that are responsible for responsible for the autonomic functions which contain -
Controlling the ventilation via signalling system regulated by chemo receptors which detects change in acidity of the blood.
Acts on cardiovascular centers.
Controlling the reflex centers like vomiting,coughing,sneezing,swallowing etc.
Answer:
Letter B - Electrolytes.
Explanation:
Nerve signal conduction and muscle contraction depend on electrolyte balance to occur.
Sodium, potassium, and chlorine, for example, are typical electrolytes found in the body that are present in the nerve impulse due to the process of cellular depolarization.
Basically, for the conduction of the nerve signal to happen, it must happen the depolarization of nerve cells that control muscle contraction and in this process, there is mainly sodium and potassium change, while for actin-myosin system activation and finally muscle contraction, We mainly need calcium.
So, in general, an electrolyte balance is required during both processes.
