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natita [175]
3 years ago
11

A person is swimming when a fish touches his foot. his heartbeat and breathing increase for a few seconds until he realizes the

fish is harmless. which part of the nervous system returns his heartbeat to normal?
Biology
1 answer:
Elan Coil [88]3 years ago
6 0
The answer would be Parasympathetic.

The Parasympathetic is the part of the nervous system that returns his heartbeat to normal.

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What happens when the most<br> limiting factor in an ecosystem is<br> removed?
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—Explanation—
•] The definition of limiting factor; anything that constrains a population's size and slows or stops it from growing.
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•] So if the limiting factor is removed then the population begins to expand due to not having a factor that limits each species quantity.
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6 0
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Read 2 more answers
Animal Diversity Lab Activity:
Olenka [21]

The phylogenetic tree of organisms within the animal kingdom include characteristics below:

  • Ancestral protists
  • Tissues
  • body symmetry
  • Germ layers
  • Body cavity
  • Porifera
  • Platyhelminthes
  • Nematoda
  • Annelida
  • Mollusca
  • Arthropoa
  • Echinodermata
  • Chordata

<h3>What is phylogenetic tree?</h3>

A phylogenetic tree simply refers to a branching diagram or a tree showing the evolutionary relationships among various biological species of both plants and animals based on their similarities and differences; either genetically or physically

Generally, animals; be it vertebrates or invertebrates has the few characteristics below:

  • All animals are multicellular organisms
  • Animals are also heterotrophic, meaning; they depend on other organisms for food or they obtain their energy by consuming energy-releasing food substances.
  • Animals typically reproduce sexually.
  • All animals are also made up of cells that do not have cell walls.

In conclusion, the phylogenetic tree of organisms within the animal kingdom include all characteristics mentioned above

Learn more about animal diversity:

brainly.com/question/15784565

#SPJ1

5 0
1 year ago
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