Answer:
i think 1 is either b or d
Explanation:
Mass/volume
<span>for an irregular solid, the easiest way to determine volume is to fill a graduated cylinder to a certain level, record the level of water, then carefully place your solid in the cylinder and record the height of the water after the solid is in.
</span><span>the volume of a regular solid by measuring the lengths of its sides and determining the volume by multiplying length x height x width </span>
During the initial exposure to the allergen, contact is made with B cells, these B cells differentiate and produce IgE antibody. The IgE antibodies which works against the allergens are released into the blood stream where they binds to Fc receptors which are located on mast cells and basophils. Now, the mast cells has become sensitized and they will wait patiently for the second exposure. When contact with the allergen is made the second time, the allergen becomes attached to the IgE present on the mast cells and this result in degranulation which trigger a lot of allergic responses.
B. The amount of sleep students received before the exam
I would give them water and when they start swimming it's a proof that they have been alive, after all, how would they start moving if they have been dead
