4. Which statement best summarizes the principle of faunal succession?
A. Different combinations of fossils are found in different strata.
B. Some fossils are found in multiple strata, other fossils only in one stratum.
C. Some strata contain marine fossils, while others contain fossils of terrestrial organisms.
D. Fossils in older strata are more primitive than fossils in more recent strata.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.