Please help. answer the question below

I think it is temperature because that is a key to help growing kelp

its either co2 or o2

Explanation:

i cant remember specifics but i know for a fact water clarity and temperature isnt going to affect kelp. that thing wont die if u lit it on fire

true skin; another name for the dermis. lies directly beneath the epidermis and is often referred to as the true skin. outermost layer of epidermis, consisting of dead cells.