Question

question 16 (5 points)
listen
how does the principle of faunal succession assist the technique of relative dating?
a) it prioritizes parts before the whole appearance of organisms.
b) it creates unconformities in the rock layers.
c) fossils appear in the strata in a specific order based on age.
d) it accounts for the tectonic movement throughout history.
question 17 (5 points)
listen
what important change in the atmosphere occurred during the proterozoic eon?
a) nitrogen and carbon dioxide levels decreased, fueling bacterial growth.
b) methane levels decreased and oxygen levels increased, promoting aerobic life forms.
c) helium escaped into space and hydrogen was bound into water molecules.
d) carbon dioxide levels increased, causing glaciation that cooled the planet.

Explanation:

For question 16, the principle of faunal succession states that fossils appear in rock - strata in a definite, recognizable order based on their age, which helps in relative dating. For question 17, during the Proterozoic Eon, methane levels decreased and oxygen levels increased due to the emergence of photosynthetic organisms, promoting the development of aerobic life - forms.

Answer:

Question 16: C. Fossils appear in the strata in a specific order based on age.
Question 17: B. Methane levels decreased and oxygen levels increased, promoting aerobic life forms.