for those who took the AP bio exam... was it hard?? how was it?? I'm taking it on June 11 and I cant seem to finish the questions within the time limit and I'm trying every practice test and fixing my mistakes but I can't seem to be able to do well and I really want to get a 5 even a 4 or 3 at this point would work for me too... any suggestions??

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

(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.

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?