Page 24 - Final ,.Science BB Prim.5 (2nd term) 2024-2025_Neat

Human activities in water bodies affect people, animals &
plants

• A watershed helps scientists understand

how the water bodies interact.
• What happens upstream in a watershed

affects the water bodies downstream.

Upstream: the place where a river starts.
Downstream: the place where a river ends.

Dams hold the The factory waste
water behind it and trash dump
causing change in near a tributary
the water amount
in other water affects the
tributaries and
bodies water carries these
wastes to other
Second Term water bodies
causing water

pollution.

Chemical fertilizers
affect the tributary

and they leak to
other water bodies

causing water
pollution.

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