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alexdok [17]
2 years ago
14

Foresters recently noticed an apparent drop in the squirrel population in a near-by oak-hickory forest. The squirrels eat acorns

produced on the oak trees; hawks eat squirrels. The foresters are not sure what is causing the decline in the squirrel population but they are concerned that both the squirrel and hawk populations will disappear. How could they best find an answer to their question?
a) Tag and track the hawks i the area
b)Conduct a decade long population study
c) Monitor the acorn production of the oak trees for several seasons
d) Use a computer simulation model of the potential first population 
Biology
2 answers:
Studentka2010 [4]2 years ago
8 0

Answer: c) Monitor the acorn production of the oak trees for several seasons.

Explanation:

A food chain is the chain of transmission of food and energy when one organism consumes the other organism in an ecosystem.

According to the given situation, the squirrel population is dependent upon the oak trees as source of food. The hawks are dependent upon the population of squirrel as source of food. The certain decline of the squirrel as well as the hawk population may be due to the decrease in production of the oak trees for several seasons. This will reduce the population of the squirrel due to lack of food and the likelywise the population of hawk will also decline as the population will not receive squirrels as food.

solong [7]2 years ago
3 0

Answer:

D) Use a computer simulation model of the potential forest populations.

Explanation:: C is not the right answer

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All vertebrate embryos have _____ at some point during embryonic development, indicating a common evolutionary ancestor
aivan3 [116]

All chordates chare four structures. One of the is the tail. All vertebrate embryos have _<u>a tail</u>__ at some point during embryonic development, indicating a common evolutionary ancestor.

<h3>What is the relationship between chordates?</h3>

The evolutionary relationship between species is reflected in the similarities or differences in the patterns of embryonic development.

All chordates belong to the Chordata phylum, and share four main characteristics,

  1. Notochord, which is a precursor of the dorsal spine.
  2. Nerv cord, dorsally located and parallel to the notochord.
  3. Pharyngeal clefts
  4. Tail

All chordates express these structures at some point in their lives, especially in the early stages of embryogenesis. Many of them can be lost with animal development and become vestigial structures.

The tail is a vestigial structure in many vertebrates.

Vestigial structures are those body parts, genetically determined, that have been retained during the evolution of the taxonomic group but have lost or reduced their original function.

Such vestigial structures were plenty functional in the ancestors of new species, but now are typically degenerate, stunted, or rudimentary, and tend to be much more variable than homologous non-vestigial parts

All vertebrates develop a tail at some point in their embryonic life, even humans. However, this structure lost its original function in several species, so after a period of embryogenesis, this tail disappears, and its forming vertebras get fussed with each other composing the coccyx.

In many animals, the function of the tail is to stabilize, equilibrate and mobilize. But in humans, for instance, the coccyx has lost this function but is still an area of muscle insertion.

The correct option is Tail.

All vertebrate embryos have _<u>a </u><u>tail</u><u>_</u> at some point during embryonic development, indicating a common evolutionary ancestor.

You can learn more about chordates at

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Problem faced include; habitat loss and degradation, disease outbreak, invasive species, pollution, over‐exploitation/overfishing, climate change etc.

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Problem:

Habitat loss and degradation, disease outbreak, invasive species, pollution, over‐exploitation/overfishing, and climate change are notable problems experienced by freshwater and marine fishes.

Solution:

Anthropogenic activities and stressors that rapidly threaten freshwater and marine fishes are curbed through legislation and other means to prevent extinction of fishes.

Through conservation programs that plans for individual species to more species of entire faunas of a particular location also boost population size and prevent hunting of threatened or endangered species in both realms.

Overtime, genetically modified fishes which can develop resistance to diseases are introduced to the realm.

Moreso, waste channels through which pollutants gets into the water bodies are well-treated for safety of fishes.

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Who is most likely to perform a forensic autopsy?
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