Biology, asked by Reebo453, 3 months ago

the plantlets are hardened off by gradually decreasing the
a. humidity
b. Oxygen concentration
c. nitrogen source
d. all of theses

Answers

Answered by Hacker4512u

1

Answer:

humidity

Explanation:

hope it's helpful

Answered by vimlakaran38

1

Answer:

humidity

Explanation:

ok or not answer

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