La Niña is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño–Southern Oscillation climate pattern. The name La Niña originates from Spanish, meaning "the little girl", analogous to El Niño meaning "the little boy".
Using the law of superposition
Answer:
<em>The correct option is C) chlorine</em>
Explanation:
Sea water contains salts in abundance. It can be described as the water which makes up the oceans and the seas. It is known to contain approximately 96.5% water and 2,5 percent of salts. Sodium and chloride ions are the most abundant salt ions to be found in the sea. The concentration of chloride ions is 0.546 mol/kg and the concentration of sodium ions is 0.469 mol/kg. Hence, chloride ions are slightly abundant than sodium ions.
Answer:
Gram staining procedure is used to differentiate between the gram-positive and gram-negative bacteria. various reagents used in the gram staining are crystal-violet, iodine, ethanol, and safranin.
1. First, the primary strain that is crystal violet is used to stain the bacterial cells present present on the slide.
2. Then the iodine solution is added over the bacterial culture and held for 1 minute. Iodine makes a complex with the crystal violet in the cell wall of bacteria.
3. Then acetone is used as a decolorizer that decolorizes the gram-negative bacteria by dissolving its lipopolysaccharide cell wall but do not decolorize gram-positive bacteria because its cell wall is made up of peptidoglycan layer.
4. The last reagent is safranin which is used to stain decolorized gram-negative cells pink. Therefore the correct order of staining is:
Crystal violet→Iodine→acetone→sefranine
