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joja [24]
3 years ago
7

Which one of the following populations begins the flow of energy through the food web?

Biology
2 answers:
Natali5045456 [20]3 years ago
8 0

Answer: Shrubs

It's at the bottom of the food web.

vladimir1956 [14]3 years ago
3 0
If the web happened to look like this one I attached then the anwser would be shrubs. If you take a look at the arrows the shrubs energy is moving to rats, insects and lizards which in turn feeds the coyotes. The starting point is shrubs and in general most food webs start with plants.

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Does geographic distance between salamander populations increase their reproductive isolation? To answer this question, research
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Question: Does geographic distance between salamander populations increase their reproductive isolation?  To answer this question, researchers studied populations of the dusky salamander (Desmognathus ochrophaeus) living on different mountain ranges in the southern Appalachian Mountains.  The researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. Four mating combinations were tested for each pair of populations (A and B)—two within the same population (female A with male A and female B with male B) and two between populations (female A with male B and female B with male A).  The proportion of successful matings for each mating combination was measured. For example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. Then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). The reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (AA + BB) minus the sum of the proportion of successful matings of each type between populations (AB + BA).

The table (Figure 1) provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Part A - Understanding experimental design

What hypothesis did the researchers test in this study?

Answer:

"Reproductive isolation increases with geographic distance between dusky salamander populations"

Explanation:

The mechanisms of reproductive isolation are a assemblage of evolutionary mechanisms, behaviors and physiological procedures dangerous for speciation. They avert followers of dissimilar types from manufacturing offspring, or confirm that any offspring are germ-free. While in allopatric speciation the reproductive isolation is resolute superficially by the spatial isolation of populations, during sympatric speciation specific groups of persons create distinct mating organizations with self-like persons while distribution the similar home with the rest of the unique inhabitants.

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A) P: tissue, Q: organ, R: organ system, S: cell

-Hiadamcom/ From Agarvated (join the team email me at Agarvated the put a @ gm ai l .c o m without the spaces)

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Answer:

1.  Ggbb- grey hair, red eyes  ggBB- white hair, black eyes  ggbb- white hair, red eyes  GgBb- grey hair, black eyes

Explanation:

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