Environmental Engineering Reference
In-Depth Information
10.
C
Wildlife refuges serve as a safe haven for species, while also occasionally allowing hunting and fish-
ing in order to regulate populations; species benefit from wildlife refuges.
11.
B
Endemic species are usually specialists, which fill a small, specific niche.
12.
E
Parasitism occurs when one organism uses another for food and nutrients, while also harming the
other organism.
13.
B
In lichen the algae provides food for fungi through photosynthesis, while the fungi provide a safe en-
vironment in which algae can grow. In a mutualistic relationship, two or more species benefit one an-
other, each helping the other.
14.
C
When different species compete for the same resource, it is considered interspecific competition.
15.
E
In order for nitrogen to be useable by organisms, it goes through the process of fixation, which can
occur from lightning strikes or from nitrogen-fixing bacteria found on the roots of legumes or in soil.
