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vagabundo [1.1K]
3 years ago
7

3.

Biology
2 answers:
snow_tiger [21]3 years ago
4 0
True and False depending on what type of evidence their trying to gather. Hope that helps
Anon25 [30]3 years ago
3 0
False, PCR is not a several day long process to my knowledge.
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Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, calcium, potassium, magnesium
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Magnesium, calcium, phosphorous, sulfur these are essential nutrients for plants. These are required in trace quantity but are very important for plant life. Point A. will be correct answer.

Explanation:

As in B. starch n cellulose are composed of only carbon, oxygen and hydrogen.

As in C. These elements are not required on special occasion but are necessary throughout plant life.

As in D.  C H N O  is the primary component plants need but these secondary nutrients are equally necessary for growth n structure of plant.

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Calcium plays the most important role in structure formation of plants. Also act as messenger molecule in signaling. Deficiency  of calcium caused wilting , weakened stem and ultimately death of plant.

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