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Romashka [77]
3 years ago
13

Plant growth is dependent on the amount of fertilizer applied. That was the hypothesis Mel and Bill decided on for their science

project. They planted identical seeds in the same potting mix, in similar pots. Each pot received the same amount of water and all the pots were placed in the same location in the greenhouse. Mel and Bill’s data was summarized after three weeks. What would be an appropriate research question to guide this scientific investigation? A) Where do plants grow best? B) What influences plant growth? C) Does varying the amount of fertilizer influence plant growth? D) How does location and fertilizer amounts influence plant growth?
Biology
2 answers:
Serggg [28]3 years ago
4 0

Answer:

It is C

Explanation:

irinina [24]3 years ago
3 0

The correct answer is C.

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The bicarbonate buffering system in the blood is the most important buffering system in the ECF. Bicarbonate ion and carbonic acid are the key components of this buffering system. The weak base <u>bicarbonate</u> serves to buffer the strong acid <u>H+</u><u>.</u> The buffer to the strong base <u>OH-</u><u> </u>is <u>carbonic acid</u>. The byproduct of these reactions is <u>water.</u>

Explanation:

A buffer system utilizes chemical buffers and resists any changes in the pH and adjusts acidity and alkalinity of the medium by binding or releasing H+ ions accordingly.  

A bicarbonate buffering system in the ECF regulates the bicarbonate level and maintains the normal acidity level of blood.

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NaHCo3 + HCl → H2CO3 + NaCl

H2Co3 + NaOH → HCO3 + H20

The acidity of the blood is regulated by maintaining the ratio of bicarbonate and carbonic acid at 20:1 under normal conditions through the bicarbonate buffer system. The carbonic acid level is regulated by the respiratory system; while carbonate level is regulated by the renal system.

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