2) Trace elements are those required by an organism in only minute quantities. Which of the
following is a trace element that is required by
humans and other vertebrates?
A) nitrogen
B) sulfur
C) oxygen
D) phosphorus
E) Iron
I

Why was mendel's work not accepted at the time? o a. his results were false. o b. he did not repeat his experiments. o c. he did not have any data. o d. his results were surprising,

(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.

9. the history of life on earth is recorded in