You need to specify species so that we will know what you are talking about.
Varies between species. Specify a species and I will give you specifics.
You must specify the species.
You must specify exactly what items you need for the meeting.
To specify means to give more detail. Here are some sentences.You need to specify which meaning of that word you want to use.Please specify which sort of hinge you need for your door.I can't help you if you don't specify the sort of paint you want.
You need to specify if this is a stock or aftermarket subwoofer. You need to specify if this is a stock or aftermarket subwoofer.
In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.In the entire world it would be hard to say, so you need to specify a specific location.
There is insufficient information in the question to properly answer it. You did not specify what "this" species was. Please restate the question.
You need to specify "it".
You need to specify who 'they' are.
You need to specify what is it that is symbolic.
You need to specify
You need to specify what 'these' refers to.