Stress can affect the circulatory system by causing headaches. True or False

Stress effects

Explanation:

The nervous system also expels more hormones, such as cortisol or adrenaline, that increase blood pressure and damage the inner layers of the arteries, as they can harden them or increase their thickness, generating arteriosclerosis.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.