What moves through the community from one trophic level to another as organisms feed on one another? Which is enhanced by decomposers and detritivores as they recycle nutrients? ... Lichen is often the first organism to appear in an area that has had all life stripped from it because of some disturbance.
What two factors exert the greatest influence over a terrestrial biome?
Temperature and moisture are the two climatic factors that most affect terrestrial biomes.
When an increase in the population of prey occurs Which of the following usually occurs in a population of a predator?
As the prey population increases, there is more food for predators . So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease.
What sort of organisms are prairie dogs and beavers?
Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters.
What is the connection between organisms that utilize cellular respiration?
What is the connection between organisms that utilize cellular respiration and the flow of energy? Organisms that use cellular respiration are able to transfer 100% of the energy to the next trophic level.
What factor has the greatest influence on the type of ecosystem?
The abiotic condition that exerts the greatest influence on biome classification, particularly terrestrial biomes, is climate .
What two abiotic components have the greatest influence on biome plant life composition and influence where a biome is located?
Temperature and precipitation , and variations in both, are key abiotic factors that shape the composition of animal and plant communities in terrestrial biomes. Some biomes, such as temperate grasslands and temperate forests, have distinct seasons with cold and hot weather alternating throughout the year.
What factors control the increase of population?
Population growth rate is affected by birth rates, death rates, immigration, and emigration . If a population is given unlimited amounts of food, moisture, and oxygen, and other environmental factors, it will show exponential growth.
What happens when prey population increases?
As the prey population increases, there is more food for predators . So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease.
What causes the prey population to increase?
Predator and prey populations cycle through time, as predators decrease numbers of prey. Lack of food resources in turn decrease predator abundance, and the lack of predation pressure allows prey populations to rebound.
What is the scientific name for a prairie dog?
Black-tailed prairie dog ( Cynomys ludovicianus ) Species Description: Prairie dogs occur only in North America.
Is a black-footed ferret a herbivore?
Black-footed ferrets are carnivorous and have a very specific diet. They are specialist predators of prairie dogs, which make up 90% of the ferret's diet. ... On rare occasions ferrets will eat ground squirrels, other small rodents, cottontail rabbits, and birds.
What organisms prey on prairie dogs?
Prairie dogs are an important food source for many predators. Badgers, coyotes, foxes, bobcats, golden eagles, and various hawks all take their toll. Rattlesnakes and bullsnakes occasionally prey on the young.
Do decomposers perform cellular respiration?
Many decomposers process the energy storage molecules in dead material in the same way that other animals process energy storage molecules: through cellular respiration. Like humans and other animals, these decomposers give off carbon dioxide as one of the products of cellular respiration.
What is the difference between aerobic and anaerobic respiration?
Differences: Aerobic respiration takes place in presence of oxygen; whereas anaerobic respiration takes place in absence of oxygen . Carbon dioxide and water are the end products of aerobic respiration, while alcohol is the end product of anaerobic respiration.
What organisms uses cellular respiration for their cellular energy needs?
Cellular respiration is the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions. Cellular respiration takes place in the cells of animals, plants, and fungi , and also in algae and other protists.
How abiotic factors affect an ecosystem?
Abiotic factors make up much of the variation seen between different ecosystems. By determining the availability of essential resources such as sunlight, water, oxygen, and minerals , abiotic factors influence which organisms can survive in a given place.
What are the two most important factors that influence the characteristics and distribution of biomes?
Temperature and moisture are the two climatic factors that most affect terrestrial biomes.
Which characteristic of a geographic region would have the greatest influence on the type of ecosystem?
Climate is the single most important factor determining the geographic distributions of species and major vegetation types. It also influences the properties of ecosystems and the flows of energy and materials through them.
What are the 5 abiotic factors?
The most important abiotic factors for plants are light, carbon dioxide, water, temperature, nutrients, and salinity .
What are the most important abiotic factors in estuaries?
This activity introduces students to the nature of estuaries, estuarine environmental factors, and four important abiotic factors— pH, temperature, dissolved oxygen, and salinity —and how they vary in estuaries.
What two factors most influence the terrestrial biomes give three examples and analyze how these two factors influence them?
Explanation: Mainly the terrestrial biomes are determined by temperature and precipitation of the localities . These main factors of the climates also.
Which factors affect the quality of population?
- Literacy rate.
- Health of a person indicated by life expectancy.
- Skill formation.
What factors affect animal population growth?
In the natural world, limiting factors like the availability of food, water, shelter, and space can change animal and plant populations. Other limiting factors, like competition for resources, predation, and disease also impact populations.
Why is quaternary consumers occupy the top position in the pyramid of energy?
Energy is lost ascending each trophic level of the pyramid of energy. ... Quaternary consumers, meanwhile, occupy the top position in the pyramid of energy because nothing preys upon them in turn . The prey of one species might also be the predator of another species.
How can predators and prey influence each other's evolution?
In the predator prey relationship, one species is feeding on the other species . ... In doing so, they affect the success and survival of each other's species. The process of evolution selects for adaptations which increase the fitness of each population.
What happens when there are more prey than predators?
When prey is abundant, predator populations increase because more young are able to survive. More predators kill more prey, which, along with food scarcity, decreases the population. ... When the predators are removed, prey populations explode.
How does predation affect evolution?
“ Organisms evolve over the long term in response to their enemies , and with increased predation intensity more species evolve.” The second hypothesis is that as biodiversity increased, by chance predators with more complex feeding strategies evolved.
What is coyotes prey?
They hunt rabbits, rodents, fish, frogs, and even deer . They also happily dine on insects, snakes, fruit, grass, and carrion. Because they sometimes kill lambs, calves, or other livestock, as well as pets, many ranchers and farmers regard them as destructive pests.
How do predators affect the ecosystem?
Predators have profound effects throughout their ecosystems. Dispersing rich nutrients and seeds from foraging , they influence the structure of ecosystems. And, by controlling the distribution, abundance, and diversity of their prey, they regulate lower species in the food chain, an effect known as trophic cascades.
What is the difference between predation and parasitism?
The main difference between predation and parasitism is that the predator immediately kills the prey in predation whereas parasite does not kill the host organism. However, in some cases, the parasite may eventually kill the host organism.
Who eats fox?
What eats a fox? Foxes are preyed upon by animals higher up in the food chain, such as coyotes , mountain lions, and large birds like eagles. Another threat to foxes are humans, who hunt them and destroy their natural habitats.
Is a dog a prey or a predator?
Dogs are considered predators to many types of animals, including birds, cats, guinea pigs, goats, and even cows.
What is the scientific name for the black-footed ferret?
The currently accepted scientific name for the black-footed ferret is Mustela nigripes Audubon and Bachman [2,32,77]. SYNONYMS: None. ORDER: Carnivora.
Can you eat prairie dogs?
Prairie Dogs are an Endangered Species in Canada, so their strictly off the menu. You may have meant the Richardson Ground Squirrel, which is commonly referred to as a Gopher. While Badgers, Ferrets and Fox love to eat both animals, you would not enjoy either.
Are ferrets omnivores?
Ferrets are strict carnivores . In the wild they prey upon and eat whole animals that consist of raw meat, raw bones, other tissue and digested vegetable matter.
Is a prairie dog a herbivore?
FEEDING: Omnivores by nature, black-tailed prairie dogs prefer to eat short grasses, low-growing weeds, and flowering plants . They will occasionally eat insects but obtain the majority of their nutritional needs, including water consumption, from vegetation.
What is the role of decomposers in the carbon cycle?
In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere , where it's available to plants for photosynthesis. ... The most important thing recycled by rot is the element carbon.
Do decomposers do photosynthesis?
Decomposers break down organic matter . They are sinks for plant and animal wastes, but they also recycle nutrients for photosynthesis. ... They feed on the remains of all aquatic organisms and in so doing break down or decay organic matter, returning it to an inorganic state.
Why do decomposers use cellular respiration?
Decomposers, such as bacteria and fungi, derive their nutrients by feeding on the remains of plants and animals. The bacteria and fungi use cellular respiration to extract the energy contained in the chemical bonds of the decomposing organic matter , and so release carbon dioxide into the atmosphere.
