<span>In marine vertebrates, the gill arches use the external gas exchange. The water holds less oxygen.
The ribs in terrestrial vertebrates have enclosed respiratory surface which is inside the body and comes as paired lungs.
Kidneys are efficient in excretion of regulation of water and nitrogenous wastes. Their reproduction is normally sexual with separate sexes.</span>
1. Balances fluids.
2. Structure. Support for tissues.
Well I not a computer Genius but no well yes
Answer:
DNA is one of the major sources might be wrong tho
Explanation:
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
The statement which is true is as follows:
- As evidence changes, scientific theories can also change.
Thus, the correct option is A.
<h3>What is Scientific theory?</h3>
A Scientific theory may be characterized as a well-determined description of some features of the natural world, based on a body of certainty that has been repeatedly assured through observation and experiment.
Scientific theories describe the natural world, while scientific law explains natural phenomena. It is not assumed that if a single study or inference is wrong, a scientific theory can be invalidated. It undergoes a series of protocols before rejection.
As evidence is modified or changed, the scientific theories can also be altered on the basis of it.
Therefore, the correct option for is question is A.
To learn more about Scientific theories, refer to the link:
brainly.com/question/26665644
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