Living things - живое существо
living thing / being / creature
Biotic - 1) of or relating to
living organisms 2) (of a factor in an ecosystem) produced by the action of
living organisms; отгреч. Biotikos —
жизненный) — факторы живой среды, влияющие на жизнедеятельность организмов.
район; зона 2) ареал, область обитания 3) площадь, пространство, участок
An ecosystem (EK-oh-sis-tuhm) is made up of
groups of living things, and the environment in which they live.In an ecosystem, the living things are able
to get the things that they need in order to survive.Healthy ecosystems are in balance.In other words, there is enough food, water,
and shelter for all of the species that live within the ecosystem.
Ecosystems are made up of several different
populations.A population is a group of
the same species of plant or animal living together in the same place and
time.Populations live in environments
that meet their specific needs.For
example, there are many species of tropical plants and animals that thrive in
rain forest ecosystems, but would not be able to survive in other places.
Plant and animal populations interact with
each other in many different ways.Animals tend to use plants for food and shelter.Animals carry seeds from place to place, and
help to fertilize the soil.Insects find
their food while hiding in or around plants.Insects also help pollinate plants so that they can grow and produce
fruit.When plant and animal populations
work together, they function as communities.A community is made up of all the populations found in a specific area.
Food webs and food chains can be used to
illustrate the ways that plants and animals interact within ecosystems.Each food chain is comprised or made up of
three basic parts.Food chains always
begin with a green plant.These plants
are known as producers because they use photosynthesis to make their own
food.The next level is made up of
consumers, or animals that eat other plants or animals in order to obtain
energy.The last level of a food chain
is made up of decomposers which consume non living things, and help to break
down organic material into nutrients for the soil.
There are many different types of
ecosystems.Ecosystems can be found in
tropical rain forests, saltwater marshes, coral reefs, kelp forests, and deep in
the ocean.Each ecosystem is unique, but
each also requires a delicate balance between the plant and animal species in
order for the ecosystem to remain healthy.Pollution, rapid deforestation, natural disasters, and slow
environmental changes over time can all threaten the health of our earth's
ecosystems.We should do everything we
can to preserve nature's delicate balance so that its wonders can be enjoyed by
generations to come.