One
Environmental cycles are natural ways that ____________ and ____________ are reused in our world.
Chemicals and Elements
Animals breathe out ____________ ____________.
Carbon Dioxide
Energy is the ability to make things _______ or to cause _______.
Happen, Change
Energy can change from one form to another, but it cannot be _______ or _______.
Created, Destroyed
Rhythms that follow the moon are known as __________ rhythms.
Lunar
These cycles help keep our ____________, ____________, and soil healthy.
Air, Water
When things die, carbon goes back to the ____________ or ____________.
Soil, Air
List different kinds of energy:
- _______ energy from the Sun
- _______ energy in food
- _______ energy when things move
- _______ energy stored in objects
Solar, Chemical, Kinetic, Potential
Biotic rhythms are patterns in the behavior or life processes of __________ things.
Living
__________ rhythms are associated with the seasons, such as animals hibernating in winter.
Annual
The water cycle includes four main processes: ____________, ____________, ____________, and ____________.
Evaporation, Condensation, Precipitation, Collection
Most of the air is made up of ____________ gas.
Nitrogen
Most of the energy on Earth comes from the _______.
Sun
These cycles help animals and plants know when to eat, sleep, grow, or __________.
Reproduce
The __________ acts like an alarm clock for most living things.
Sun
Evaporation occurs when water turns to ____________.
Vapor
Special ____________ change nitrogen gas into forms that plants need.
Bacteria
Plants collect sunlight and transform it into food through a special process called _______.
Photosynthesis
Sunlight, temperature, and the __________ all help set these rhythms.
Moon
In the 19th century, people noticed changes in plants and animals with the __________ and time of day.
Light
Plants use ____________ ____________ from the air.
Carbon Dioxide
Nitrogen returns to the soil through ____________ ____________ or when things die.
Animal Waste
Energy moves from the Sun to plants, then to _______.
Animals
Some rhythms happen every day and are known as __________ rhythms.
Circadian
Jean-Jacques d'Ortous de Mairan found that plants kept their daily __________ even in darkness!
Rhythms