A group of researchers are monitoring the health of a salt marsh. They measure high levels of nitrates and phosphates in the sediment of the marsh
but not in the water samples. In this instance, which ecological service is the
marsh providing?

A. coastal land
B. Aquatic habitat
C. Flood protection
D. Water purification

what are the options

true                                                                                                       true true true true true true

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.