The island of Surtsey,which formed from volcanic eruptions,was first colonized by _____.
A) bacteria and fungi
D) vascular plants
Which element is LEAST likely to be an abiotic factor that can affect community structure?
C) Cloud cover
D) Decomposing organic matter
Species richness refers specifically to the ____.
A) numbers of individuals of each species present.
B) ability of larger animals to enrich themselves by successfully preying on smaller ones.
C) number of different species in the habitat.
D) feeding levels at which the animals are located.
E) relative abundance of the species
All of the populations of different species that occupy and are adapted to a given area are known as ____.
A) the biosphere
B) a community
C) an ecosystem
D) a niche
E) the habitat