A hectare of wheat fixes 32,000 kg of carbon per year through photosynthesis and uses 7,000 kg of carbon per year for cellular respiration. The net primary productivity of the wheat field is therefore _____ kg of carbon/hectare/year.

Fill in the blank(s) with the appropriate word(s).


25,000 or 25000

Biology & Microbiology

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Large bodies of water maintain relatively constant temperatures compared to terrestrial locations. Why is this so, and how is this feature of water important for life?

What will be an ideal response?

Biology & Microbiology

Which of these statements does NOT describe a characteristic of the genetic code?

A) The number of codons and amino acids is the same. B) The code is used by nearly every living organism. C) Some amino acids have multiple codons. D) The code is degenerate.

Biology & Microbiology

In which cavity does the human heart lie?

a. thoracic b. pelvic c. abdominal d. cranial e. spinal

Biology & Microbiology

1st law of thermodynamics

What will be an ideal response?

Biology & Microbiology