Answer:
During the Devonian period which occurs 375 million years ago, gills are present in the fossil of tetrapods.
Explanation:
Gills present in tetrapods which able the marine animals to breathe inside water but with the passage of time the sac which is present around the gills convert into lungs and these tetrapods are able to live on the land. Examples of tetrapods are frog, lion, birds and salamander etc.
the air's oxygen is partially replaced by carbon dioxide. This is because of the gas exchange that occurs so we can live.
Answer:
c) logical-mathematical
Explanation:
There are many kind of intelligence, <em>people with logical-mathematical intelligence is attracted to hard facts and numerical data (calculus and algebra)</em>, they can make subjective analysis and investigation using the scientific method.
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