<span>. Estuaries have been called the "nurseries of the sea" because the protected environment and abundant food provide an ideal location for fish and shellfish to reproduce. Most commercially important fish species spend some part of their life cycle in estuaries. Besides fish, many species of birds depend on estuaries for food and nesting areas. Migratory birds use estuaries as stopover points for resting and feeding before continuing their journey. Marine mammals also use estuaries as feeding grounds and nurseries.</span>
Which has a bigger effect on who we are:our genes or the way we are raised
The skin functions as a barrier to prevent the entry of microorganisms.
The immune system<span> is made up of a chain of cells, tissues, and organs that work together to protect the body. </span>
Biology Biology Biology
I don’t what else to say
