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Get their energy indirectly from the sun Consumers
Obtains energy only from producers herbivores
Percent of energy transferred in tropic levels 10 percent
Carbon from the bodies of plants and animals that died millions of years ago fossil fuels
78 percent of our atmosphere nitrogen
can be used by plants only when transformed by bacteria first nitrogen
plants is likely to be a pioneer species moss and lichen
Examples of places primary succession can be seen new island formed by a volcanic eruption, or abandoned asphalt parking lot
Burning fossil fuels in great quantities has increased the amount of this in the atmosphere Carbon Dioxide
This is essentially photosynthesis in reverse, has oxygen as one of the primary reactants and produces energy for organisms to use cellular respiration
Examples of photosynthetic organisms freshwater algae, plants, phytoplankton, protists
Consumers are organisms that get solar or other energy this way indirectly from the sun
Where is the energy consumed by organisms stored? in fat and sugar molecules
Plants allow carbon to enter an ecosystem through this photosynthesis
Bacteria that live within the roots of a plants are a critical part of the nitrogen cycle because they do this? change atmospheric nitrogen into a usable form
True or false? Succession is possible because new species make the environment less suitable for previous ones True
True or false? An example of secondary succession allows growth of plants after a forest is destroyed by fire True
True or False? Parts of shrubs and trees are a likely component of soil formed during primary succession? False-soil is comprised of erosion from rocks and roots from lichens and mosses
True or False? Algae is likely to be in the bottom trophic level of a food chain? True
Terms used to refer to the many feeding relationships that are possible in an ecosystem? food web
Responsible for making nitrogen in the atmosphere usable by living organisms? nitrogen-fixing bacteria
A carbon sink which holds a lot of carbon but is not part of the carbon cycle? carbon found within limestone rocks
Type of succession that occurs after a natural process such as a volcanic eruption or flood? secondary succession
One of the largest carbon reservoirs on Earth limestone
The process in which nitrogen is cycled between the atmosphere, bacteria, and other organisms. Nitrogen Cycle
.Organisms that can transform unusable nitrogen in the atmosphere into chemical compounds containing nitrogen that can be used by other organisms. Nitrogen Fixing Bacteria
Evidence of excessive use of fertilizer Algal Bloom
The process through which 5 to 8% of nitrogen is changed into usable nitrogen. Lightning fixation
A process in which energy from the sun is used to make sugar molecules is photosynthesis
In deep-ocean ecosystems, this escapes from the cracks in the ocean floor is used by bacteria to make their own food. hydrogen sulfide
Organisms that get their food by breaking down dead organisms are called decomposers
A process within the cell of an organism that uses glucose and oxygen to produce carbon dioxide, water, and energy is called ? cellular respiration
Nitrogen-fixing bacteria live within the nodules on the roots of plants called ? Legumes
On new islands formed by volcanic activity, you will most likely find this type of succession. primary
The first organisms to colonize any newly available area are known as ? pioneer species
During primary succession, these often begin the process by breaking down the rocks into soil. lichens
Only about 10 percent of the energy is passed to the next level. Trophic Levels
In the deep-ocean ecosystem, this would occupy the bottom trophic level of an energy pyramid. bacteria
Excessive use of this on lawns and gardens can affect the nitrogen and phosphorus cycles in nearby lakes and streams. Fertilizer
During succession, a final and stable community is referred to as a(n) climax community
Succession that occurs on abandoned farmland is called? Old field succession or secondary succession
A gradual process of change and replacement of the types of species in a community is called? ecological succession
.Horses and cattle are classified as this because they eat only producers. herbivores
Organisms that can transform unusable nitrogen in the atmosphere into chemical compounds containing nitrogen that can be used by other organisms. Nitrogen fixing bacteria
A tiger is an example of this type of consumer? carnivore
Bacteria and fungi are examples of this type of consumer? decomposer
The energy transfer here is more complex than energy transfer in a food chain, because the interaction between many organisms is considered. food web
The ultimate source of energy for all organisms except those living deep in the ocean near a thermal vent is what? Sun
In the carbon cycle, the source of carbon for producers is found where? Atmosphere
The burning of these over many years has resulted in an increase in the amount of carbon dioxide in the atmosphere. Fossil Fuels
This type of fixation occurs under great pressure and with the use of a catalyst. When atmospheric nitrogen and hydrogen are combined to form ammonia this type of fixation process takes place. Industrial
Although the majority of the air we breathe is this type of gas, most living organisms are unable to use it in its atmospheric form. Nitrogen
When fuel is burned, large amounts of nitric oxide is release into the atmosphere and can combine with oxygen and water vapor to form this? Acid Rain
These type of salts are not soluble in water, they sink to the bottom and accumulate as sediment. Phosphorus
This type of fixation is where most nitrogen fixing is completed. Biological
Created by: rseneta