Answer:
B. Convergent and subduction zones can cause trenches
Explanation:
The answer here is THE LEAF IN FLASK B WILL NOT GET CARBON DIOXIDE TO MAKE GLUCOSE. In order to carry out photosynthesis, plant needs several ingredients. It needs chlorophyll, the green coloring pigment in plants, sunlight, water and carbon dioxide. To nurture growth, plant needs a favorable medium (usually good soil but there are also those that can grow attached to another plant and those called aerial plants) and nutrients. Carbon dioxide is one of the most abundant gases in the atmosphere. It plays an important role in both plant (photosynthesis) and animal (respiration) processes. In photosynthesis, green plants convert carbon dioxide and water into food compounds such as glucose and water. The oxygen released during photosynthesis is needed by animals, human also, for respiration. Potassium hydroxide, on the other hand, is an inorganic solid compound which absorbs carbon dioxide. During experiments, plants placed inside a solution with potassium hydroxide will test negative in starch test. Absence of starch is attributed to the absorption of carbon dioxide by potassium hydroxide. Photosynthesis did not happen because of the absence of one of its ingredients which is carbon dioxide,hence absence of one of the end products, starch.
Answer: b, increased size of grey areas.
Explanation:
The buffer was too acidic i.e when a blood film is viewed through the microscope, the RBCs appear redder than normal, the neutrophils are barely visible, and the eosinophils are bright orange.
<h3>What are buffer used for?</h3>
Buffers are employed to keep the pH of a solution steady because they can neutralize little amounts of extra acid or base. There is a specific pH range for a certain buffer solution and a predetermined amount of acid or base that can be neutralized before the pH changes. The buffer capacity is the maximum amount of acid or base that can be supplied to a buffer without causing a pH change.
As a pH value greater than 7.8 or lower than 6.8 might result in mortality, human blood contains a buffer of carbonic acid (H2CO3) and bicarbonate anion (HCO3-) to keep blood pH between 7.35 and 7.45.
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