Download Chapter 2 Section 2

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Introduced species wikipedia , lookup

Occupancy–abundance relationship wikipedia , lookup

Soundscape ecology wikipedia , lookup

Molecular ecology wikipedia , lookup

Island restoration wikipedia , lookup

Bifrenaria wikipedia , lookup

Habitat conservation wikipedia , lookup

Storage effect wikipedia , lookup

Biogeography wikipedia , lookup

Ecological fitting wikipedia , lookup

Ecology wikipedia , lookup

Lake ecosystem wikipedia , lookup

Allometry wikipedia , lookup

Natural environment wikipedia , lookup

Theoretical ecology wikipedia , lookup

Habitat wikipedia , lookup

Chapter 2: Living Things in Ecosystems
Section 2.2 – How Species
Interact With Each Other
Section 2.3 – Adapting to the
Ecosystems are made up of abiotic
and biotic factors; as well, biotic
components can affect each other
in various relationships.
In predation, one organism kills and eats
The organism that is eaten
is called the prey, and the
one that does the eating is
called the predator.
Predators tend to feed on young and
weak individuals and often limit the
size of the prey population.
As populations of prey begin to
decline, the predators either
switch food sources or die off
occurs when two
or more organisms
of the same or
different species
attempt to use the
same limited
Species can compete even if
they never come into contact
with each other.
Parasitism is when
an organism lives in
or on another
organism and
feeding on it
immediately killing
Parasites are the organisms
which do the feeding, while
the host is the organism
being fed off.
Mutualism is the
between two
species in which
both species
Commensalism is the relationship in
which one species benefits and the
other is neither helped nor harmed.
Organisms tend to be well
suited for their environment.
Kangaroo rats are well suited to the
deserts of southwestern U.S. –
where there is very little water
• Eliminate very little
water in their feces
and urine.
• They do not sweat.
• Their active at night,
when it is cooler.
How does this close match
between organisms and their
environment come about?
Darwin described this close
relationship as Natural
Darwin proposed that
over may generations
natural selection causes
the characteristics of
populations to change.
This change is known
as evolution.
With each generation, an
organism develops better
adaptations – inherited traits that
increases an organisms chance of