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Dichloro-Diphenyl-Trichloroethane better know at DDT was a pesticide used extensively in America until it was banned 1972. DDT weakens bird shells and causes them to break when the parent tries to incubate them. DDT almost led to the extinction of many species of birds until Rachel Carson's book Silent Spring brought the plight of birds to worldwide attention. Unfortunately DDT is still exported to many third world countries.
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What is the symbiosis balance between the rodents and the carnivorous birds?
The carnivorous birds like the owl, thrush, parrot, hawk, eagle, etc. usually eat the rodents. The rodents are the prey while the carnivorous birds are the predators. Let's try to cut them down here: Prey: Rodents Predator: Carnivorous Birds Here's a simple food chain: Grass>Rodent>Carnivorous Birds There's an interdependence between the rodents and the carnivorous birds. "Interdependence" means when 2 sources tends to depend on each other. There should be enough carnivorous birds to help control the rodent's population, otherwise the rodent might overpopulate or their population might explode. There should also be enough rodents to help feed the carnivorous birds, otherwise they might starve to death. If the animal population changes, it can wreck the food chain and affect other animals. Population Change Without Grass: If the carnivorous bird's population dropped, then the rodent's population will rise as there'll rodents to get eaten. If the rodent's population dropped, then the carnivorous bird's population will also drop as there'll be less food for them to eat. If the carnivorous bird's population rose, then the rodent's population will drop as there'll be more rodents to get eaten. If the rodent's population rose, then the carnivorous bird's population will also rise as there needs to be more carnivorous birds to take more control patrol of the rodent population. Population Change With Grass: If the carnivorous bird's population dropped, then the rodent's population will rise as there'll be more rodents to get eaten. The grass population will also drop as more grasses will get eaten. If the rodent population dropped, then the carnivorous bird's population will also drop as there'll be less food for them to eat. The grass population will rise as less grasses will get eaten. If the carnivorous bird's population rose, then the rodent's population will drop as more rodents will get eaten. The grass population will rise as less grasses will get eaten. If the rodent population rose, then the carnivorous bird's population will also rise as there needs to be more carnivorous birds to take more control patrol of the rodent population. Indirect Interdependence: Animals in the higher link also relies on the lower link. If animal went extinct, then it'll affect the whole upper part as their predator will starve to death, and it affects the other predator. Animals in the higher also have an indirect interdependence with the lower link, although they don't prey on these stuffs. Although the carnivorous birds don't eat the grasses, they still needs to rely on grass because the rodents needs the grasses, which then drives the food chain to them. This is why they need to indirectly depends although that's not their primary food source. Although the carnivorous birds don't eat the grass, they won't last long enough if there weren't any in quite a long explanation. The rodents needs to depend on grass for their primary food source, so without them, the rodents will starve to death. The rodents are the primary food source for the carnivorous birds, so if the rodents are gone, then these carnivorous birds will starve to death. This explains the indirect interdependence that higher animals also needs to rely on the lower links because the lower links helps drive every food source through the food chain, which is them passed to them.
What did the study in a Pennsylvania forest reveal about the environmental effects of using DDT?
The study in a Pennsylvania forest found that using DDT led to declines in bird populations due to eggshell thinning, which made them more susceptible to breaking during incubation. This ultimately disrupted the ecosystem by harming bird reproduction and population dynamics.
The loss of the gene coding for an orange crest in the bird population described above is an example of what?
The loss of the gene coding for an orange crest in the bird population is an example of genetic drift, specifically a founder effect or a bottleneck effect, depending on the context. This phenomenon occurs when random events cause certain alleles to be lost from the gene pool, leading to reduced genetic variation. Consequently, traits like the orange crest may disappear entirely from the population over generations.
How do forest fires affect the niche of birds?
Forest fires can alter bird habitats by destroying nesting sites, food sources, and shelter. This can force birds to relocate to different areas or adapt to the changed environment. Some bird species may benefit from forest fires by creating new habitats and food sources, while others may decline or disappear due to the destruction of their niche.
What is the chemical composition of quail eggshells?
The eggshells of quail, or any other bird, are mainly calcium carbonate (usually about 95%). The remainder is mostly calcium phosphate, magnesium carbonate, and various proteins.
How did a osprey bird first decline in population before the reintroduction?
shot as trophies and egg collecting
What can happen if too many insect eating birds live in a habitat?
Several things can happen if too many insect birds live in an area. Firstly, the insect population will decline greatly. Then, the bird population will begin to decline due to lack of food.
What are three ways that bald eagles are going extinct?
1. loss of habitat 2. loss of usable ( non polluted ) resources. 3. i don't know if it is still a big problem, but pesticides have this chemical in them that weakens the egg shells on the eggs of bald eagles. this made the eggs super prone to breaking, which greatly reduces population of the bird.
What is the population of Bird Kingdom?
The population of Bird Kingdom is 20.
What is Bird Cove's population?
Bird Cove's population is 137.
What is the population of Blue Bird Corporation?
Blue Bird Corporation's population is 1,000.
What energy transformation is when a bird is eatin a worm?
The worm's chemical energy changes to the bird's chemical energy obtained from the worm.The two chemical energies are different.
How the number of trees in a forest could affect the size of a bird population?
The number of trees in a forest can directly impact the size of a bird population by providing habitat for nesting, roosting, and foraging. More trees can support a greater variety of bird species and provide more resources like food and shelter, leading to a larger bird population. Conversely, the removal of trees through deforestation can reduce suitable habitat for birds, leading to a decline in their population.
Why was there a decline in wild turkey population?
Unregulated hunting and several years of low poult survival rate dropped turkey numbers drastically. Today, the turkey has rebounded nicely, and once again is an extremely common bird.
Is pest bird control considered to be a green product?
No, as damaging the animals is in fact damaging the ecosystem. Animals are part of the food chain, when this is interrupted than the chain weakens.
Is bird population numerical or categorical?
Categorical
What is an example of a rate of change that is a fraction?
Inflation of prices. Population growth, particularly in comparison between different countries. Decline of animal and bird populations. That's three for a start. Anything that has a change expressed as a fraction (over a day, month, year etc).
