Answer:
A. 2Fe + 3Cl2 --> 2FeCl3
B. 2Fe + 3O2 --> 2Fe2O3
C. C4H10O + 4O2 --> 4CO2 + 5H2O
D. C7H16 + 11O2 --> 7CO2 + 8H2O
Explanation:
Answer : Option B) Plant stomata opening and closing to maintain homeostasis.
Explanation : Claude Bernand was a French Physiologist who first discovered about "homeostasis" which is defined as the controlled stability of the internal milieu, or internal environment, of cells and tissues in plants.
In plants stomatal opening and closing was done for maintaining homeostasis with the external and internal plant environment.
The statement 'what stars are made of' is an example of a question that could be answered using cosmological models.
<h3>
What are cosmological models?</h3>
Cosmological models are scientific models to understand the forces that shape the structure of the universe.
The cosmological model answers diverse types of inquiries such as ''what stars are made of' because this model describes the composition of celestial bodies (including stars) in the universe.
The cosmological model can examine different questions about the universe including its composition, structure, evolutionary trajectories, etc.
In conclusion, the statement 'what stars are made of' is an example of a question that could be answered using cosmological models.
Learn more about cosmological models here:
brainly.com/question/14507985
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Answer:
"Hydrogen is still available outside the core, so hydrogen fusion continues in a shell surrounding the core. The increasingly hot core also pushes the outer layers of the star outward, causing them to expand and cool, transforming the star into a red giant."