Answer:
Explanation:
Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. ... Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter. Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons
Mold fossils and cast fossils
Answer: The correct answer is Diffusion.
The molecules of carbon dioxide enter the oceans through the process of diffusion into the surface of sea water and dissolve by a physio-chemical process. The factors affecting the amount of carbon dioxide diffusion includes wind, concentration of carbon dioxide, temperature of the water etc. The carbon dioxide which diffuses into the oceans reacts with water forming carbonic acid, carbonate and bicarbonate ions. The gaseous form of carbon dioxide in atmosphere is converted to non-gaseous form reduces the carbon dioxide pressure in the water and promotes more diffusion from the atmosphere.
Answer: All of the above.
Explanation: Inflammation process is part of the immune response to fight against infection or injury. It works together with the complement system that promotes the ability of antibodies and phagocytes to remove microorganisms and damaged cells from site of infection. Cytokines are produced by T-helper cells and macrophages to regulate inflammation by producing cytokines that sends positive feedback for the initiation of inflammation process. Promoting the production of chemicals, proteins and enzymes for chemotaxis and diapedesis of phagocytes.
Basically during inflammation the site of infection or injury will change colour and turn red, it will swell and cause the production of pyrogens which will result in fever symptoms due to raise of body temperature.
Answer: A, B, and C are correct.
Polar attractions are (a) forces between atoms of partial charges.(b) weaker than covalent bond.(c) they are numerous.
Explanation:
Polar attractions take place between atoms with partial charges. They are weaker than covalent bond and numerous of them occur in the living cells. They can form between H and other electronegative atoms like oxygen provided they have strong partial charges.
