unit test sience Flashcards
what are the 2 different habitats on planet earth
terrestrial and aquadic
what’s the difference between abiotic and biotic factors
biotic factors are living things such as
• plants
• animals
• bacteria
abiotic factors are non living things such as
• water
• oxygen
•sunlight
what are the 4 spheres on earth
atmosphere, lithosphere, hydrosphere, biosphere
provide examples of each sphere
atmosphere: the highest peak of earth nearly breaking into space
lithosphere: the rocky outer shell of earth
hydrosphere: all water on earth
biosphere: the zone around earth where life can exist (where humans live)
what is the relationship between the spheres of the earth
The spheres of the earth are closely connected to each other. A change in one sphere results in a change in two
what is an echo system and what are the components
made up of all living organisms and their physical and chemical environment
it consists of both living and non living components
what is the relationships between ecosystems, population, communities, and individuals
are all ecosystems the same?
Individuals make up a population; populations make up a species; multiple species and their interactions make up a community
not every ecosystem is the same
what is a sustainable ecosystem?
the ability to maintain a ecological balance
what is dynamic equilibrium
predicts that ecosystem productivity interacts with disturbance to determine how many species coexist
what is an artificial ecosystem?
provide examples?
it is an ecosystem that would fail without human assistance
an example is a farm
What is a biogeochemical cycle?
What are the 3 examples of cycles examined in class?
The ways in which an element—or compound such as water—moves between its various living and nonliving forms and locations in the biosphere
the examples we learned in class are
•water cycle
•carbon cycle
•nitrogen cycle
describe the components of the water cycle
Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow
If Nitrogen is so abundant in the atmosphere, why do we need the Nitrogen Cycle?
Without enough nitrogen, plant growth is affected negatively
and overall nitrogen is the key to life
which plants activity leads to more CO2 in the atmosphere
write the process
cellular respiration
break down glucose to produce ATP, which may be used as energy
which plants activity decreases the level of CO2 in the atmosphere?
write the process
photosynthesis
turning light energy into chemical energy
