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lana [24]
3 years ago
14

A certain widely distributed mammalian species remained unchanged for about 30 million years. Most members of this species lived

on a fertile plain, but some members (that were less well adapted) survived in low numbers in the surrounding mountains. They adapted and evolved to this area and became significantly different from their relatives on the plain. A sudden meteorite attack struck the plain and destroyed the plain population. The mountain population was unaffected and as the plain environment recovered moved to the plain. In the absence of competitors, they underwent a very rapid population explosion. Which mode of evolution does this example explain
Biology
2 answers:
Dahasolnce [82]3 years ago
7 0
Punctuated equilibrium is the answer.
sdas [7]3 years ago
5 0
For the answer to the question above, p<span>unctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geological history, remaining in an extended state called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and rapid (on a geologic time scale) events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another.</span>
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Give me an example of a producer, primary consumer, secondary consumer, and decomposer within the same ecosystem.
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Answer:

<u>Producers</u>

Producers are any kind of green plant. Green plants make their food by taking sunlight and using the energy to make sugar. The plant uses this sugar, also called glucose to make many things, such as wood, leaves, roots, and bark. Trees, such as they mighty Oak, and the grand American Beech, are examples of producers.

<u>Primary Consumer</u>

Within an ecological food chain, Consumers are categorized into primary consumers, secondary consumers, tertiary consumers. Primary consumers are herbivores, feeding on plants. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants).

<u>Secondary Consumer</u>

Spiders, snakes, and seals are all examples of carnivorous secondary consumers. Omnivores are the other type of secondary consumer. They eat both plant and animal materials for energy. Bears and skunks are examples of omnivorous secondary consumers that both hunt prey and eat plants.

<u>Decomposer</u>

They include fungi along with invertebrate organisms sometimes called detritivores, which include earthworms, termites, and millipedes. Fungi are important decomposers, especially in forests. Some kinds of fungi, such as mushrooms, look like plants.

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