What is the gradual change in species composition in a given area called

[ou.01]which of these is the most likely use of an electromagnetic wave which has wavelength shorter than microwaves but longer than visible light? o heat food safely o neat food safely o take images of bones and teeth o transmit radio and cellular phone signals o take images of bones and teeth o transmit radio and cellular phone signals o detect the location of objects which emit heat

As water is cooled from 4 c to 0 c its density

What is an additional type of erosion found at the coast? what does it mean?