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1. Ecologists call this one-way flow of matter and energy from a producer to a primary, then to secondary, and perhaps to a tertiary consumer, a food chain. ... ~ Single food chains do not show all the feeding relationships in ecosystems. The food web shows all the organisms at each feeding level or trophic level.
2. Energy flows through an ecosystem in one direction: from producer to primary consumer to secondary consumer to higher consumers. A biomass pyramid provides a picture of the feeding and nergy relationships within a food web and the direction of the flow of energy.
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A) They are named for the places where geologists first described rocks or fossils from that time
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The relationship between plant and animals, layers and types of rocks, fossils and radioactive dating are used for preparing Geologic Time Scale. Geologic time is comprise of four Eons namely Hadean (the initial stage) followed by Archean and Proterozoic and Phanerozoic in the recent . The Eons are classified into eras and theses eras reflect the changes in fossil record. Eras are further divided into periods and some periods into Epochs.
In periods a single rock system is found while the division in the era's reflect major changes in fossil record.
the middle class I think that is right, if not comment an I will fix it
What made them distinctive is the rise of a new social order based around Puritans who were something like extreme Christians. These were the people who burnt people at the stake because of witchcraft and things like that. Many colonies were made to run away from them.
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Roosevelt made the case for what he called "the New Nationalism" in a speech in Osawatomie, Kansas, on September 1, 1910. The central issue he argued was government protection of human welfare and property rights, but he also argued that human welfare was more important than property rights.
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