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A collection of interacting parts.
System
Part of the central nervous system protected by the skull
Brain
Earth’s core, mantle, and crust.
Geosphere
Microorganisms that act as decomposers.
Bacteria
To act upon one another.
Interacting
Microscopic plantlike organisms in aquatic environments that produce their own food.
Phytoplankton
An organism, such as a plant or algae, that makes its own food.
Producers
An organism that cannot make its own food.
Consumers
The layer of gasses surrounding Earth.
Atmosphere
______ eat other organisms.
Consumers
What cells need to do work.
Energy
A description of feeding relationships between organisms in an environment.
Food Chains
Cells that send messages to the brain when it receives stimuli.
Receptors
The interacting water on, under, and above Earth's surface.
Hydrosphere
Arrows show the flow of matter and energy from one organism to another.
Food Webs.
The feeding relationships among all the organisms in an ecosystem.
Food Webs
Plants use _______ during photosynthesis to make food.
Carbon Dioxide
A nutrient that xylem transports to the cells in a vascular plant.
Minerals
An organism that lacks chlorophyll and gets nutrients from dead or living organisms.
Fungi
A waste of gas produced during cellular respiration.
Carbon Dioxide
To rely on or need the same resource as another organism.
Compete
A community of organisms interacting with each other and with the nonliving environment.
Ecosystem
A system of interacting living organisms on Earth.
Biosphere
An organism that breaks down plant and animal material into simple chemicals.
Decomposers
(5 + 5) - (2 x 5) + 3 = ?
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