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Crucigrama Sopa de Letras Hoja de Trabajo
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Science Study Guide

Horizontales
the introduction of harmful substances into the air, water, or land
Something an organism needs to live (ex. shelter or water)
pandas are endangered because of
New animals that use up all the resources
in danger of becoming extinct
when water overflows onto land that's dry and changes the ecosystem
reuse items
Verticales
all the animals in an ecosystem
happens when there are limited resources for animals
when people cut down lots of trees to make space for farming or building
any living thing, like a plant, animal, or even a tiny germ
when an organism does not exist or is no longer alive
a community where all things, living and non-living, work together to balance their environment
using an item again and again to lower waste
to make less waste