TV / Movies: Born Mar 10,1958, She Starred In This Movie: Last Action Hero ?

Questions

[science and technology] what is the name of the minute organisms found drifting near the surface of seas and lakes?

[science and technology] what is the name of the instrument used for measuring humidity in the air?

[science and technology] what fruit is considered to be the most nutritious?

[science and technology] the deficiency of which vitamin causes scurvy?

[science and technology] how many coloured squares has a rubiks cube?