Dale makes a model of part of an elemental solid by attaching balls to each other with rods. His model looks something like the
following image:
How could Dale improve his mode
A.
by using springs instead of rods to allow the model atoms to vibrate in their positions
B.
by using strings instead of rods to allow the model atoms to move more freely
C.
by using different sizes of balls to represent different kinds of atoms
D.
by using cotton balls instead of hard balls to allow the model atoms to change size
How could Dale improve his mode
A.
by using springs instead of rods to allow the model atoms to vibrate in their positions
B.
by using strings instead of rods to allow the model atoms to move more freely
C.
by using different sizes of balls to represent different kinds of atoms
D.
by using cotton balls instead of hard balls to allow the model atoms to change size
2 answers:
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Answer:
The respiratory system is necessary for an organism's body to live because it introduces oxygen-rich air, which is needed to perform vital functions, while at the same time promoting the elimination of carbon dioxide.
Explanation:
Oxygen (O₂) is necessary for life because it participates in the process of cellular respiration, a mechanism that allows the oxidation of glucose to form energy in the form of ATP.
The respiratory system is made up of a set of organs that carry air into the body and facilitate gas exchange, i.e. the entry of O₂ into the blood and the elimination of potentially harmful carbon dioxide (CO₂).
This exchange of gases occurs in structures called pulmonary alveoli, whose surface is located in relation to the pulmonary capillary vessels.
- The entry of air into the lungs brings O₂ to the alveoli, which will diffuse into the pulmonary capillary for the process of hematosis or oxygenation of the blood.
- CO₂, a product of metabolism, leaves the capillary to the alveoli, to join the air that will be expelled during expiration.
Both O₂ and CO₂ require a transport molecule in the blood, red blood cell hemoglobin, which binds the gases and allows them to be transported to and from the tissues.
Learn more:
Exchange of respiratory gases brainly.com/question/4569375
