Atoms
The building blocks to all matter (living and nonliving)
Molecules
When 2 different atoms combine
Molecules form what 4 things?
cells
tissue
organs
other organisms
What 4 atoms is every organism made of?
Oxygen
Nitrogen
Hydrogen
Carbon
What doe every organism require?
energy
Can energy be created and destroyed?
No
What are 2 ways organism get energy?
- By changing light from the sun to chemical energy (Autotrophs)
- consuming other plants and animals (Heterotrophs)
Where do producers get energy from?
The sun
What gives energy to almost every living thing?
sunlight
Producers
microorganisms that can break down sunlight into energy during photosynthesis
What is reversed during photosynthesis?
Energy
What do consumers get energy from?
organisms
How are consumers sorted into categories?
how they get food
What do herbivores eat?
plants
What do carnivores eat?
animals
What do omnivores eat?
plants and animals
What do scavengers eat?
dead plants and animals
How do decomposers get energy?
breaking down dead organisms into simple atoms and molecules
Food webs
They show how energy flows among organisms
What does a food chain show?
how energy moves from the sun to a producer and who eats who
Primary consumers
Consumers that eat plants
What do primary consumers eat?
secondary consumers
What do food webs show?
How different food chain are interconnected
Niche
The role each organism has in the ecosystem
WHat are important to the ecosystem?
Scavengers and decomposers
What happens to all atoms?
They are reused, recombined, and rearranged
Abiotic factors
Nonliving parts of an ecosystem
Ex: water and air
Biotic Factors
Living parts in an ecosystem
Ex: fungi and animals
Phytoplankton
A pond's most important producer