Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report?

(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.

Me the formula cacl2 represents the compound

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel