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iVinArrow [24]
2 years ago
12

Ecologists have come together for a meeting to determine the indirect and direct interactions between species that live in the h

abitat of a local pond. The feeding relationships were listed as: 1. Fish feed on larval dragonflies. 2. Adult dragonflies feed on bees. 3. Bees pollinate the terrestrial flowering plants.
Biology
1 answer:
Korolek [52]2 years ago
8 0
<h2>Interactions </h2>

Explanation:

1) Direct interaction: A direct interaction deals with the direct impact of one individual on another when not mediated or transmitted through a third individual

Direct interactions in the given habitat are:

  • Bee and dragonfly
  • Dragonfly and fish
  • Terrestrial flowering plant and bee

2) Indirect interaction:  An indirect interaction is the impact of one organism or species on another that is mediated or transmitted by a third

Indirect interactions in the given habitat are:

  • Bee and fish
  • Dragonfly and terrestrial plant
  • Terrestrial flowering plant and fish
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State two ways in which a single-celled organism, such as amoeba and a human body cell are alike
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The number of cells in an average-sized adult human is on the order of 10^14 cells. Use this information, and the estimate that
KengaRu [80]
IF:
Number of cells: C = 10^{14}
DNA lenght: D = 2m = 12.42 * 10^{-4} mi
Distance from Earth to Sun: ES=93000000 mi = 9.3* 10^{7}mi

Then:
a) <span>Over how many miles would the total DNA from the average human stretch?
The answer is product of multiplication of the number of cells (C) and the DNA length (D):
Total DNA: </span>T = C*D
              ⇒ T = 10^{14}*12.42* 10^{-4} mi
              ⇒ T = 12.42* 10^{14-4} mi
              ⇒ T = 12.42* 10^{10} mi
The total DNA from the average human will stretch 12.42* 10^{10} mi

b) How many times would the total DNA from the average human stretch from Earth to the Sun and back?
The answer is concluded from the ratio of the total DNA length (T) and the <em>twice </em>(because of stretch to the Sun and back, thus, <em>two directions</em>) of distance from <span>Earth to the Sun (ES) and :
Ratio: </span>R= \frac{T}{2*ES}
      ⇒ R = \frac{12.42* 10^{10}mi }{2*(9.3* 10^{7}mi)}
      ⇒ R = \frac{12.42* 10^{10}}{18.6*10^{7}}
      ⇒ R = 0.6677* 10^{10-7}
<span>      ⇒ R = 0.6677* 10^{3}
</span><span>      ⇒ [tex]R = 667.7
</span>Thus, 667,7 times will the <span>total DNA from the average human stretch from Earth to the Sun and back.</span>
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3 years ago
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