Which of these units of pressure are equal in size
i. torr
ii. mm of hg
iii. kpa
iv. atm

1) i and ii
2) i and iii
3) ii and iv
4) ii and iii

Express the following number in scientific notation. 0.026890 =

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon