Anions are negatively charged particles. The water molecule is a polar molecule, that means that, it is partly positive and partly negative. The oxygen atoms in the water molecules are more electronegative more than the hydrogen atoms and they draw the shared electron nearer to themselves than the hydrogen atoms; this make them to be slightly negatively charged while the hydrogen atom is slightly positively charged.
Therefore in solution, the anions would be attracted toward the hydrogen atom that is slightly positive while the cations will be attracted to oxygen atom that is slightly negative.
Benthos live in the benthic zone. The benthic zone is the lowest level in a body of water. Bentho organisms include things such as crustaceans and polychaetes
The symptoms given may be a manifestation of Polycystic
Ovary Syndrome (PCOS), which is a common endocrine system disease among
females.
Symptoms are the following:
<span>1. </span>Menstrual disorders: oligomenorrhea (irregular
period) or amenorrhea (cessation of period), which start around the time of the
first period (menarche)
<span>2. </span>Infertility: which results from anovulation
(ovaries are unable to release an egg cell during ovulation)
<span>3. </span>Obesity: at least 40% of females with PCOS are
obese
<span>4. </span>Hirsutism (excessive body hair where hair is usually
minimal or absent): big amount of
masculinizing hormones in women with PCOS may cause hirsutism
Answer:
D. The nerves exit the central nervous system in the head and from the lumbar spine.
Explanation:
The preganglionic neurons transmit the nerve impulses through the cranial or spinal nerves that arise from the brain, to the postganglionic neurons from where the nerve fibers that relay these nerve signals to the different viscera and effector organs, located along the spinal cord
More blood vessels are stimulated to vasoconstrict more than vasodilate because blood vessels contain more alpha receptors than beta receptors.
<h3>What is Vasoconstriction?</h3>
This is the process which involves the narrowing of the blood vessels through their muscle wall.
They contain more alpha receptors such as Alpha-adrenoceptor agonists than beta receptors which mimicks the effects of sympathetic adrenergic nerve activation to the blood vessels.
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