There are 2 reasonable theories: 1) the earth cooling down 2) the sea level fell
Answer: All the given symptoms describes Pertussis.
Explanation:
Pertussis can also be defined as whooping cough or 100 day cough. It is respiratory disease which is highly contagious.
it is caused by the bacteria Bordetella pertussis. It is also known to be uncontrollable as this condition does not allows the person to breathe properly.
If recognized at early stage then antimicrobial like erythromycin can be used to treat it. The symptoms of this disease lasts for a long time and is not cured easily. Its initial stage includes cold, cough and running nose, same as common cold.
Answer:
Limewater
Explanation:
Limewater is a solution of calcium hydroxide. if co2 is bubbled through lime water it will turn into a milky color.
The rate of which magma cools determines the size of the crystals in the new rock.
Answer:
Option). They have a double-bonded oxygen in different locations.
Explanation:
Both glucose and fructose are monosaccharides, having molecular formula C₆H₁₂O₆.
Glucose and fructose are different sugars, aldose and ketose respectively, due to the different position of carbonyl group (double bonded oxygen with carbon or C = O group).
In glucose, the oxygen atom makes double bonds with last carbon atom of the chain, which means carbonyl group shows an aldehyde group. Thus, it is an aldose sugar.
In fructose, the oxygen makes double bonds with an internal carbon atom and represents a ketone group. Thus, it is a ketose sugar.
Thus, the correct answer is third option.