Which BEST describes why certain traits led to an increased frequency within the population of medium ground finches? A because the traits were acquired B because the traits were favorable C because the traits were inherited D because the traits were mutations

According to the cladogram, which organisms have roundworms as a common ancestor?

(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.

Explain how scientists use geologic time to determine the age of landforms.