Photosynthesis happens when plants use the energy of the sun and other reactants to produce sugar and water that they need to survive. The reactants of photosynthesis are energy, carbon dioxide, and water. The products are glucose and oxygen.
<span>Energy (Sun) + CO2 (Carbon dioxide) + H2O (Water) -> C6H12O6 (Glucose) + O<span>2 (Oxygen).
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Photosynthesis is generally performed by various plants and bacteria.
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
Answer:
Explanation:
In an atom, there is a dense center known as the nucleus. It is made up of two subatomic particles: <u>protons</u> and <u>neutrons</u>. The protons have a positive charge and the neutrons have no charge, so overall the nucleus is positively charged.
The third subatomic particles, negatively charged electrons, are located around the nucleus in a cloud.
The particles in the nucleus are 
.
B, proton is positive and it does not represent the symbol
