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The process that holds heat in the atmosphere and keeps the earth warm is called
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Plants excrete waste through
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Why does energy decrease as it moves up an energy pyramid?
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Plants transport water through a type of vascular tissue called
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Nitrogen is essential because it is a key component of
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Mammals that have complete development inside the uterus are called
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
All of the following are ways nitrogen is made available to plants except
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
Single-celled organisms such as bacteria and protists take in gases by
placental
the greenhouse effect
Some is used to perform life functions.
proteins and nucleic acids
respiration
xylem
stomata
simple diffusion
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