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Aleksandr-060686 [28]
3 years ago
15

What makes one DNA molecule different from another?

Biology
1 answer:
Sever21 [200]3 years ago
3 0
A persons DNA is encoded with it’s own personal unique traits. Kind of like I have blue eyes and my friend had brown eyes. Hope this helps.
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An ecologist studying plants in the desert performed the following experiment. She staked out two identical plots, which include
QveST [7]

An ecologist studying plants in the desert performed the following experiment. She staked out two identical plots, which included a few sagebrush plants and numerous small, annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one of the plots with a fence to keep out kangaroo rats, the most common grain-eaters of the area. After two years, to her surprise, four of the wildflower species were no longer present in the fenced plot, but one species had increased dramatically. The control plot had not changed. Using the principles of ecology, propose a hypothesis to explain her results.

Explanation:

  • This example highlights the impact of plant predation on species selection. In the fenced off plot animal predation is not a factor on plant selection.
  • In this case plants will compete for resources only with each other and in this case one plant had a selective advantage over the other 3 species of plants. In the plot exposed to animal predation the ratio of the four species is equal.
  • This is likely do to an increased preference of animals for the plant species that dominates in the fenced off plot and/or anti-animal predation tactics by the other three species.

a.Hypothesis: kangaroo rats are keystone species

-Reintroduce kangaroo rats (and the other locally extinct species)

-Should observe equilibrium re-established

b.Hypothesis: kangaroo rats exert top-down control on community

-Reintroduce kangaroo rats (and other locally extinct species)

-Increase kangaroo rat population in other plot

-Decrease (but don't eliminate) kangaroo rat population in other plot

c.Hypothesis: Locally extinct species inferiorly competed with the extant species of plant

-Remove surviving species from other plot (and remove kangaroo rat population)

3 0
3 years ago
Sedimentary rock is made from sediments that come from other rocks. These sediments form from _____ of the rocks.
Montano1993 [528]

Answer:

Im 90% shure its wethering but please don´t hate me if im wrong

Explanation:

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Answer:

grasshoppers skip through the air

Explanation:

i seen one do it

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A psychrometer is used to determine which weather variables?
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Relative humidity. A psychrometer has two thermometers, one for dry-bulb temperature and the other wet-bulb temperature.
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Who's hair grows the quickest, boys or girls?
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It's around equal but girls.
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