Which of the Following is an example of how the respiratory system interacts with the circulatory system? a. The veins carry oxygen-rich blood to the different parts of the body.

b. The arteries carry blood from different parts of the body to the heart to maintain homeostasis.

c. The oxygen inhaled during respiration is carried throughout the body by blood to maintain homeostasis

d. The carbon Dioxide exhaled by the lungs is carried by the capillaries to the different parts of the body.

i'd say that the moon rock is about 2.2 billion years old.

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

here's one link:

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

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.