food chains
nitrogen cycle
carbon
biomes
random points
100
what group in the trophic pyramid is an omnivore?
secondary consumers
100
true or false, the N cycle is a biogeochemical process
true
100
where is carbon found? 3 places
crust, atmosphere, ocean
100
this biome has needle like leaves and dark green conifers
taiga
100
which level of the food chain has more biomass?
producers, due to the energy rule
200
A food web is showing?
the food chains inter-connected to one another
200
in the first step, what happens? What is the nitrogen turned into?
N fixation occurs. Changing the nitrogen into NH3 and NH3
200
living things release carbon through this process
cellular respiration
200
this biome has seasons, migration, and tall trees such as cedars
temperate rainforest
200
rabbits eat grasses and other plants. suppose a population of rabbits in a meadow increases, what will this do to the carrying capacity?
carry capacity will decrease, because there are more rabbits and not enough grass. overall the rabbit population will begin to decrease over time due to lack of resources
300
what is a niche?
the role an animal plays in its environment
300
What happens after NH3 and NH4 are made?
The nitrifying bacteria adds oxygen, creating No2 and NO3
300
Human activities that disrupt the carbon cycle include the burning of fossil fuels. Which statement best summarizes this disruption?
- A.Burning fossil fuels increases the energy stored in carbon compounds.
- B.Burning fossil fuels adds carbon compounds to all Earth systems.
- C.Burning fossil fuels transforms carbon from compounds to its elemental form.
- D.Burning fossil fuels causes other processes of the carbon cycle to occur at a faster rate.
- E.Burning fossil fuels shifts carbon compounds from the geosphere to the atmosphere.
E. burning fossil fuels shifts carbon compounds into the atmosphere
300
what are the frozen areas in the tundra called?
permafrost
300
a hurricane knocking down most of the palm trees on an island, disrupting animal shelters is an example of?
an abiotic limiting factor
400
explain the energy rule? why can't we have a lot of animals in a food chain?
Only ten percent of energy is transferred forwards, the energy would eventually run out
400
when NO3 interacts with the plant, this is called
assimilation
400
Scientists cite evidence that human activities have been causing global climate change, which is affecting ecosystems worldwide. Which of these actions would likely be the MOST effective in slowing global climate change and its harmful effects?
- A.Reduce the use of artificial fertilizers to grow crops.
- B.Add devices to coal-burning power plants to capture sulfur and nitrogen compounds.
- C.Ban the use of chlorofluorocarbons (CFCs), which damage the ozone layer.
- D.Replace fossil fuel consumption with renewable energy resources that do not transfer carbon to the atmosphere.
- E.Reduce tourism and fishing in polar regions, which would reduce the rate that ice melts.
D. Replace fossil fuel consumption with renewable energy resources that do not transfer carbon to the atmosphere
400
what type of trees have leaves that change color and fall off?
deciduous trees
400
The graph describes the population of dandelions in a field over the course of one summer.
Which statement best describes the growth of the dandelions?
- A.Linear growth occurs because the field provides abundant but limited resources during the summer.
- B.Logistic growth occurs because the field provides unlimited resources during the summer.
- C.Exponential growth occurs because the field provides unlimited resources during the summer.
- D.Fluctuating growth patterns occur because the population reached the carrying capacity of the field during the summer.
- B.Logistic growth occurs because the field provides unlimited resources during the summer.
500
Carla is studying the relationships among the organisms in a nature preserve. Carla has made a drawing showing how the organisms in the nature preserve interact. Like many food webs, Carla's food web does not show decomposers. How would the ecosystem be altered without the actions of decomposers?
Dead matter would build up, and all populations would eventually decrease.
500
what happens during denitrification?
excess nitrogen goes back to the sky
500
All living things depend on the movement of water between ecosystems and their environment, which is part of the water cycle. Bruce claims that the water cycle could continue without an energy source. Which statement provides the strongest evidence for an argument AGAINST Bruce's claim?
- A.Sunlight provides the energy needed for condensation and precipitation.
- B.Sunlight provides the energy needed for evaporation and transpiration.
- C.Plants and animals use energy to obtain and transport water.
- D.Plants use the energy of sunlight to perform photosynthesis.
- E.Oxygen and hydrogen gases combine to produce water, and the reaction releases energy.
- B.Sunlight provides the energy needed for evaporation and transpiration.
500
what if the main difference between the desert and savana
savanna receives more rain, which means animals there can find water easier
500
what happens when carry capacity is reached?
The population remains but does not exceed that higher number of individuals