19 questions
What do all organic molecules contain?
Oxygen
Nitrogen
Water
Carbon
Why do living things need nitrogen?
to build new cells
to get rid of wastes
to cool them off
to carry nutrients
Where can primary succession begin?
in a place with only rocks
in a place with trees
in a place with crops
in a place with weeds
What plant will most likely grow first in secondary succession?
pine tree
lichen
crab grass
hardwood tree
Which of these might be a climax species?
the first species in an area
the first insects to eat lichens
the most common weeds in a farm field
the oldest trees in a forest
What is the process where bacteria in soil change nitrogen gas into forms plants can absorb?
Carbon cycle
Condensation
Nitrogen fixation
Evaporation
Which word best describes how carbon moves between the environment and living things?
Carbon cycle
Nitrogen cycle
Oxygen cycle
Water cycle
Which word best describes how nitrogen moves between the environment and living things?
Carbon cycle
Nitrogen cycle
Oxygen cycle
Water cycle
Name the process where a substance burns.
Combustion
Decomposition
Respiration
Transpiration
Name the process where plants release water vapor.
Combustion
Decomposition
Respiration
Transpiration
Name the process where organisms use oxygen and release carbon dioxide.
Combustion
Decomposition
Respiration
Transpiration
Name the process where a substance is broken down into simpler molecules.
Combustion
Decomposition
Respiration
Transpiration
Precipitation that is stored underground is ___________.
Biodiversity
Condensation
Groundwater
Runoff
The gradual change of a community over time is ________.
Ecosystem
Ecology
Ecological succession
Pioneer species
The variety of species present in an area is called ___________.
Biodiversity
Commensalism
Ecology
Pioneer species
Precipitation that runs from land to rivers and lakes is _______________.
Condensation
Evaporation
Precipitation
Run off
The first living things to grow in an area are called __________.
Tertiary Consumers
Adaptations
Primary consumers
Pioneer species
After a fire, how will the number of species or biodiversity change over time?
Biodiversity will decrease
Biodiversity will increase
Select an example of a disturbance that starts secondary succession.
Forest fire
Island forming
Volcanic eruption