From a conservation perspective, are amphibians populations doing well, unchanged, or poorly? What are four threats to amphibians?

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Jamar FerryLv2

28 Sep 2019

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I need some help finding or highlight key information to help answer the question below for each example and tie in would be extremely helpful

unisexual species: Most vertebrates reproduce sexually, with populations comprised of both males and females. However, unisexual species have evolved independently several times. using a specific example from fishes, amphibians, and lepidosaurs, illustrate how unisexual species arise and persist (topminnows, Amazon Molly, common edible frog, Jefferson salamander, Aspidoscelis ,and Cnemidophorus and the examples)

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apricotgoat901

About how long does regeneration of a planarian transected horizontally require to form two complete planarians?

For what purposes is planarian regeneration studied?

How does planarian regeneration differ from that of amphibians?

TRUE OR FALSE: Planarian stem cells are different because they are always present, meaning they do not have to undergo clonal expansion before becoming active.

To what phylum do planarians belong?

Which of these areas if amputated from the remaining planarian body will not regenerate to form a new animal?

What is the population of stem cells in planarians responsible for their regenerative properties?