Sponges are immobile, aquatic animals that live on rocks and sediment at the bottom of salt water environments. There are many different species of sponge. Most species of sponge are sensitive to environmental stress. Human activity causes some environmental stress. Scientists sampled the marine habitats along a length of coastline in Algeciras Bay in southern Spain to study the species diversity of sponges． The scientists selected 12 sampling stations， $$\(\mathbf{A}\)$$ to $$\(\mathbf{L}\)$$ ，as shown in Fig．2．2．The scientists noted the land use or human activity along the coast next to each sampling station． The sampling stations were chosen to compare the effects of land use or human activity on the species diversity of sponges in the bay． At each marine sampling station，the scientists： －placed permanent line transects， 50 m in length，on the seabed －photographed all sponges sighted at a distance of 1 m either side of the transect －sampled each transect for the same length of time －sampled each transect four times a year． （c）（i）A student concluded that the species diversity of sponges was higher in the sampling stations where there was less human activity． Using the information in Fig． 2.2 and in Fig．2．3，evaluate this conclusion． Use the values in Fig． 2.3 to support your answer． . . . . . . ［3］ （ii）Use the information in Fig． 2.2 and in Fig． 2.3 to state two other conclusions about the species diversity of sponges in Algeciras Bay． Use the values in Fig． 2.3 to support your answer． . . . . . . ［3］ ［Total：10］

Answer:

Knowledge points:

Solution: