Is 21 days enough time to view all the phases of the moon? explain.

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review

Plant species a has a diploid number of 12. plant species b has a diploid number of 16. a new species, c, arises as an allopolyploid from a and b. the diploid number for species c would probably be a) 12. b) 14. c) 16. d) 28. e) 56.