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grade (5) - 2nd term - concept 3
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the stations that are responsible for removing harmful wastes from wastewater.
water treatment plant
water that had been already used before
wastewater
they are workers in the wastewater treatment plants.
wastewater engineers
. It means using resources in a way that does not negatively affect the future supply of these resources.
sustainability
The action of control reaching of humans to the natural resources or using them.
preservation
put (T) or (F) Dam can hold the water behind it which causes a change in the amount of water in a water body .
True
all the following pollute the water except:
building a dam
A water body which contains a mixture of sea water and river water.
An Estuary
the land that is partially covered with water.
wetland
the water body that is often starts at mountains.
rivers
ground water is replaced by ---
rain
put (T) or (F) rivers, streams and lakes are fresh, moving water bodies.
(F)
Cross the odd word: Salamander - Catfish - Water lily - Kelp - frog
Kelp > > in salty water
What happens when water is collected in low land?
it forms a lake.
From examples of freshwater lakes in Egypt is ................. .
Lake Nasser
Areas of the ocean which contain coral reefs and intertidal zones.
shallow areas
The largest saltwater ecosystems that cover large parts of Earth's surface.
oceans
put (T) or (F) Lake Bardawil is an example of saltwater lakes in Egypt.
(F)
put (T) or (F) some ponds and lakes may dry up in winter months.
F
give reasons why most of the freshwater cannot be used for drinking.
because it is frozen.
breaking down of rocks by the water is called ---
weathering process
the geosphere is also known as ----
lithosphere
give reasons why the earth seems as a blue marble from the outer space?
because the water covers 71% of the land
roots of plants are fixed in the soil, this is an interaction between ---- and ----- earth's systems.
biosphere - geosphere
the large area of land that have the same weather, soil, and wildlife.
Biome
respiration of a frog is an example of interaction between ---- and ---- earth systems.-
biosphere and atmosphere
from freshwater bodies -------, -------- and -----
rivers - streams - ponds - some lakes - rain - glaciers - groundwater
Give reasons why water is a renewable resource?
Because of water cycle
water body surrounded by land
lake
rainwater is a part of --------- system
hydrosphere
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