Fact 1: Plants release oxygen during the day but not during the night.

Fact 2: Many plants alter their position when they go to sleep at night.

Given the two facts above, answer the question "Plants release oxygen during the day and alter their position to what?" with the following options: 
- seasons
 - dig
 - state
 - hide
 - growth
 - travel
 - survive
 - sleep


 

        sleep 