Water Cycle
Water is heated by the sun in a process called_______________________.
evaporation
Soil dissolves and washes into the _________________________.
groundwater
Animals take in _______________ when they breathe.
oxygen
Animals who are active during the night are called_____________.
nocturnal
The process by which the community in one place is gradually replaced by another community is called _______________ ______________________.
ecological succession
Water cools and droplets form clouds in a process called ______________________.
condensation
If lightning strikes, nitrogen gas is made into a solid and travels to the _________________.
soil
Animals give off ______________________ when they breathe.
carbon dioxide
Animals who are active during the day are called________________.
diurnal
The name of the volcano which erupted in Washington state in 1980
Mt. St. Helens
Water droplets fall as _______________________.
precipitation
Some nitrogen can get into the water in clouds and fall as _______________.
rain
Plants take in __________________ given off by animals.
carbon dioxide
The tides are controlled by which heavenly object?
the moon
What type of grub was attacking the willow trees near Mt. St. Helens?
weevils
Plants give off moisture through a process called _________________________.
transpiration
The wood in a forest fire is burnt and releases nitrogen into the _________________.
atmosphere
Plants give off ________________ through transpiration.
oxygen
___________________ is when animals move from the place they breed to the place where they feed.
migration
When animals sleep during the winter, it is called______________________.
hibernation
Approximately what percent of the Earth's surface is covered in water?
70%
Nitrogen in surface water is needed by ____________________ to live.
plants or animals
The chemical formula for carbon dioxide is ________________.
CO2
In places where summer months are extremely hot and dry, animals may burrow into the mud in a resting state called __________________.
estivation
An organism that is not native to an area, which disrupts the food supply of native organisms
invasive species