Answer: The correct option in blank is anion.
Explanation: Ionic compound is formed by the transfer of electron from one atom to another atom. When an electropositve atom lose an electron it form cation, whereas as anion is formed when an atom gain an electron. These actions and anions then attract each other and form an ionic compound.
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Example: The formation of NaCl is best example of ionic compound. Na has one electron in its outer most shell which can easily be removed to form Na+, while Cl has seven electron in its outer most shell so it can easily gain an electron lost by Na to form Cl-. Then these ions attract each other and form NaCl as shown in the figure.
The answer is <span>b. Swamps are deeper and have a larger proportion of surface water than marshes, and bogs have acidic groundwater.
Bogs, marshes, and swamps are types of wetlands. Swamps and marshes are mineral soil wetlands. Swamps are deeper and with a larger proportion of surface water than marshes. Usually, swamps develop from marshes that fill in. Bogs are organic soil wetlands. They are acid areas with acidic groundwater.</span>
8. Arteries carry oxygenated blood from the heart to the rest of the body, while veins carry deoxygenated blood from the body, back to the heart. Arteries are thick and muscular, while veins aren't as thick, and they have valves.