Living things in their environment.
Transcript Living things in their environment.
CHAPTER 1 / SECTION 1
•LIVING THINGS AND
LIVING THINGS IN THEIR ENVIRONMENT
• An organism or type of living thing
needs to obtain food, water, shelter
and other things it needs to live, grow,
and reproduce from its environment.
• An environment that provides the
things an organism needs to live is
called its habitat.
Factors in an Environment
Biotic – living parts of the environment.
Ex. Producers and consumers.
Abiotic – nonliving parts of the
Ex. water, sunlight, oxygen,
temperature, and soil.
Photosynthesis: The process of a plant
making its own food.
Living organisms can be
studied at different levels
From least to most
complex, these levels are
(in an ecological context):
Individual / Species
A species is a group of
organisms that are physically
similar and can reproduce with
Organisms do not generally live
alone. A population is a group
Migrating wildebeest population
of organisms from the same
species occupying in the same
This area may be difficult to
Tiger populations comprise
widely separated individuals
Communities and Ecosystems
• A community is all the populations that
live together in an area.
• An ecosystem is the community of
organisms that live in a particular area and
along with their nonliving surroundings.
**The community and the abiotic factors together form an
• The study of how living things interact with
each other and their environment.