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lapo4ka [179]
3 years ago
5

All scientific investigations begin with:

Biology
2 answers:
Ede4ka [16]3 years ago
7 0

Answer:

a) forming a hypothesis

ivanzaharov [21]3 years ago
5 0
A)Forming a hypothesis

Explanation)without the hypothesis there’s nothing to base your work off or to start it off with
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Expiratory reserve volume (ERV) You ask your lab partner to inspire a normal tidal inspiration, and breathe out a normal tidal e
Bumek [7]

The average expiratory reserve volume or ERV is 810.

<h3>What is expiratory reserve volume?</h3>
  • Expiratory reserve volume or ERV is the amount of air that is exhaled forcibly.
  • This can be measured using a spirometer and is used to detect restrictive lung diseases.
  • It is the maximum amount of air that can be exhaled after normal tidal volume is exhaled.
  • Respiratory volume is the volume of air which is either inhaled, exhaled or stored in your lungs.
  • The doctors estimate the reserve volume with the help of spirometer to determine some lung diseases.
  • Once diagnosed with a lung disease, spirometry is used to monitor it.
  • Here, 3 readings of ERV are taken, calculate the sum of the these and divide by 3 to calculate the average ERV.
  • ERV= (800+ 850+ 780)/ 3= 810

Learn about tidal volume here:

brainly.com/question/13077530

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7 0
1 year ago
Which of the following is required in order for homeostasis to be maintained?
elixir [45]

Answer: c

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6 0
2 years ago
Which important phenomena occur in plant leaves and help water transportation in xylem tissues?
algol13
The answer is C. The phenomena occur in plant leaves and help water transportation in xylem tissues is photosynthesis and transpiration.  A balance between these two phenomena is important to maintain balance in the plant's life.
8 0
3 years ago
What is the difference between an element and a molecule??
tino4ka555 [31]
A molecule is made of more than one atom of differing elements that can be simplified while an element cannot be simplified because it is only one atom of one type of element.
4 0
3 years ago
Which of the following is the mean number per cross of F2 generation offspring that are the result of crossing over
lara31 [8.8K]

Answer: B 2.2

Explanation:

7 0
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