An example would be us humans we captive breed them then kill them. So they could adapt and avoid the predator but still get hunted down.
An invasive species because it isn't naturally from central park.
Most fish (especially the "Bony fish") achieve neutral buoyancy through a sac called the swim bladder in there body of which is filled with air, not much but it'a just enough to keep then a float. The fish can control this organ, and using that they can fill or release air to allow them to rise or sink.
Cartilaginous fish however, do not have a swim bladder.
hope this helps :)
Skeletal muscle just attach to the skeleton of the body by itself.
If you measure the width of a book with a ruler you are collecting DATA. Data is the facts and statistics collected together for analysis.