the ability to live in salt water the ability to use oxygen in respiration the ability to cope with daily dry periods the ability to blend into the surroundings
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What adaptation is necessary in intertidal ecosystems but not in reef ecosystems?
Possibilities:
- the ability to live in salt water
- the ability to use oxygen in respiration
- the ability to cope with daily dry periods
- the ability to blend into the surroundings

the ability to cope with daily dry periods