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STatiana [176]
3 years ago
6

How can lichens help other plants repopulate an area cleared by a large lava flow

Biology
1 answer:
AveGali [126]3 years ago
5 0
Lichens are capable of breaking down rock (biological weathering). This makes it possible for small plants to start to populate the area.
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The absolute magnitude of a star:
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Astronomers define star<span> brightness in terms of apparent </span>magnitude<span> (how bright the </span>star<span> appears from Earth) and </span>absolute magnitude<span> (how bright the </span>star<span>appears at a standard distance of 32.6 light years, or 10 parsecs).</span>
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Why do you think Owen is unsure about puttung the raptors on the field?​
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Where is the story that goes with it?

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If ocean currents were to stop what would be the biggest impact to humans?how about other impacts to other life
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the zonation of flora and fauna along an altitudinal transect similar to that found along latitudinal transects is an expression
frutty [35]

The zonation of flora and fauna along an altitudinal transect similar to that found along latitudinal transects is an expression of the the life zone concept.

<h3>What is life zone concept?</h3>
  • C. Hart Merriam created the term "life zone" in 1889 to refer to regions with comparable plant and animal groups. Depending on height, location, and latitude, the climate and ecology of many places on the planet naturally divide into life zones.
  • Altitudinal zonation is the term for the generally substantial dependence on elevation: the average temperature of an area falls as the height increases.
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Learn more about the life zone with the help of the given link:

brainly.com/question/895846

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6 0
2 years ago
6. (3 pts) After transformation, 40 colonies were present on the plate. What is the transformation efficiency of the competent c
natali 33 [55]

Answer:

Given:

Number of colonies on plate = 40

Amount of DNA used for transformation = 100ng

Volume of competent cells used = 100ul

Total volume = 1ml (1000ul)

Volume plated for growth = 200ul

The amount of cells transformed per 1 µg of DNA is called the transformation efficiency

(CFU is colony forming units) => (number of colonies on plate/ng of DNA plated) X 1000 ng/µg = CFU/µg of DNA

Amount of DNA used for plating = 100ng * (200/1000)

                                                      = 100ng * (1/5)

                                                      = 100/5 = 20ng

Efficiency calculation = 40 colonies / 20ng = 2 colonies/ng

               (2 colonies/ng) * (1000 ng/µg) = 2000 CFU/ug DNA

Transformation efficiency = 2000 Transformants / ug DNA

                                          = 2 x 10³ Transformants / ug DNA

Explanation:

Efficiency of transformation is highest in the 100 pg-1 ng range, so Low transformation efficiency could be because of high amount of DNA used for transformation.

6 0
3 years ago
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