The document describes the ecosystem of a pond, including biotic factors like plants and animals, abiotic factors like water and climate, and how the ecosystem changes with the seasons. In summer the pond is filled with flora and fauna, in spring plants and animals are in full growth and pollination, in autumn leaves fall and dirty the water, and in winter most animals hibernate and the water may freeze. The passage also notes potential contamination from human waste.

1. ECOSYSTEM OF A POND

2. BIOTIC FACTORS
● Animals: ducks, fishes,
frogs, insects, mammals,
bacteria, rats, birds...
● Plants: algae, fungi, water
lilies, reeds...

3. ABIOTIC FACTORS
● light
● temperature
● atmosphere
● water
● air
● ground
● climate

4. ECOSYSTEM IN SUMMER
● In summer, this ecosystem
is normally filled with fauna
and flora.
● The animals come to the
pond to drink and wash.
Some plants die and others
grow only in this season.

5. ECOSYSTEM IN SPRING
● The plants are in full
pollination and growth, as
well as animals.
● Flowers bloom more easily.
Trees take that around to
feed off other animals.

6. ECOSYSTEM IN AUTUMN
● The leaves of the trees fall
and make the soil and pond
water are full of leaves and
are more dirty.
● The animals start hiding
because winter is coming
and should prepare to
hibernate. Collect all the
food possible to survive.

7. ECOSYSTEM IN WINTER
● No penalties are seen as
these are animals hibernate
in their homes.
● The low water
temperature and thus
can be frozen and that
living in this ecosystem
die. Normally around
this pond is usually
covered with snow.

8. THE CONTAMINATION OF PONDS
● Sometimes people are unaware that we throw away is bad in
ecosystems around us. Many animal die is hoodwinked into
believing that food and ends up dying.