Answer:
Adhesion and surface tension
Explanation:
Capillary action is the tendency of a liquid to rise or fall in a narrow tube. Two main terms are required to explain capillary action; adhesion and cohesion.
Cohesion is the force of attraction between molecules of the same kind while adhesion is the force of attraction between molecules of different kinds.
Forces of adhesion causes water to move up in a capillary tube. The water is held as it rises by surface tension forces acting on the circumference of the meniscus. The water keeps rising in the tube until the weight of the water drawn up in the tube balances the surface tension acting at the top column of the water.
Ans.
The blood pressure is defined as the pressure applied by blood cells to the wall of blood capillaries. The normal blood pressure ranges between 120/80 to 140/90, in which upper range shows systolic pressure and lower range shows diastolic pressure.
According to given data, the blood pressure of adult is 200/120, which shows an increase in blood pressure. This condition is known as hypertension. Thus, the nurse should perform next nursing intervention by keeping in mind that the patient is having hypertension and there is a need to control his blood pressure as hypertension can lead to various adverse effects on organs and systems of the body.
Answer:
(2) low power: 100 small pollen grains
high power: 25 large pollen grains
Explanation:
Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).
For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.
The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.
Answer:
Moss
Explanation:
Bio means alive, and tic means with, so biotic means with life. Moss is the correct answer because it shows sings of life, such as reproducing, and showing responses to change. Water, rocks, and sunlight are not alive because they show none of the signs of life.
