Which part of the plant develops into the primary root? select one of the options below as your
a. root tip
b. radicle
c. root hair

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.