It means 'over fishing' resulting in less fish numbers.
Naturally, the increase in algae would mean more potential for fish to not die from hunger. Having a larger food base would mean more food for the fish, and more baby fish being able to survive during their vulnerable life periods.
believe it or not, the root word itchy means fish.... i swear.. actually icthy might mean fish Itchy is not a root word, but a suffixed form of the root word itch, meaning an urge to scratch or a persistent craving. If you mean the root ICHTHY- as in ichthyology (the study of fish), it is naturally derived from ιχθύς (ichthys), the Ancient Greek word for fish.
There not mean!
if you mean 'invented', no one invented it, it occurs naturally. it was naturally
one word which can mean, can easily be replaced
naturally
That depends on what you mean with "they".
what does this mean born in, growing naturally in a particular region
I Believe You Mean Cuttle Fish...
it will degrade naturally
Increasing Naturally
The fish is larger.