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Speculate about why the levels of DDT fall more slowly in porpoises than in other animals in the ecosystem?
Wiki User
∙ 9y ago
DDT may stay in the system of porpoises longer than with other animals because porpoises lact the necessary enzymes to break down this type of poison. The use of DDT as a pesticide has endangered many animals in the past, and is not longer being used in the United States.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agocause it do
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Do humans need animals to survive?
Yes, on many levels... The whole of the ecosystem is balanced on plants, animals and the environment as a whole... Be it temperature by region or vegetation or insects.... If you remove just one component, the rest collapse...
What are high levels of pesticides found in birds of prey an example of?
chemical cycling through an ecosystem
Different trophic levels?
There are four trophic levels. They are plants, which produce food, herbivores, which are the animals that eat the plants, primary consumers, which eat the herbivores, and secondary consumers, which are those animals that eat primary consumers.
What are 13 levels of organization of life in order from smallest to largest?
Atom Molecule Organelles Cells Tissues Organs Organ System Organism Population Community Ecosystem Biome Biosphere
How are animals from the four ocean zones connected by the undersea food web?
because there are different levels
What are the levels of organization within an ecosystem?
The levels of organizatio n within an ecosystem are: Organisms-----Population----- Community-----Ecosystem-----Biomes.
What can you conclude about a ecosystem with many trophic levels?
it is a stable ecosystem
What are the levels of organisms of an ecosytem?
The levels of organizatio n within an ecosystem are: Organisms-----Population----- Community-----Ecosystem-----Biomes.
What proportion of energy is transferred from one trophic level to the next in the ecosystem?
Only about ten percent of energy is transferred from one trophic level to the next in an ecosystem. This is why the amount of animals in higher levels is smaller.
What proportion of the energy in the ecosystem is transferred from one trophic level to the next?
Only about ten percent of energy is transferred from one trophic level to the next in an ecosystem. This is why the amount of animals in higher levels is smaller.
What proportions of energy is transferred from one trophic level to the next in an ecosystem?
Only about ten percent of energy is transferred from one trophic level to the next in an ecosystem. This is why the amount of animals in higher levels is smaller.
How many trophic levels a rain forest ecosystem can support?
A rain forest ecosystem can support 3-4 trophic levels.
What is the role of the omnivore?
Omnivores eat both plants and animals, like humans, so omnivores play a major role in an ecosystem. Omnivores help keep levels of animals and plants neutral.
A biologist studies an ecosystem and finds that it has very few trophic levels What can you conclude about this ecosystem?
it is not a stable ecosystem
What are the four levels of organization in the ecosystem?
species, population, community, ecosystem, and biosphere.
What are the levels of the Ecosystem?
atommoleculecelltissueorganorgan systemmulticellular organismcommunitypopulationecosystembiosphere
How many trophic levels in a terrestrial ecosystem?
16
