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Archy [21]
3 years ago
6

Which process led to the release of large amounts of carbon dioxide at the end of the Devonian period?

Biology
2 answers:
Kruka [31]3 years ago
8 0

Answer:

Option (D)

Explanation:

The Devonian period represents the fourth period of the Paleozoic era, ranging from about 420 million years to 360 million years back. This period represents the age of fishes because a variety of fish species were present and also during this time, the plants that colonized on the land areas started undergoing evolution giving rise to the formation of gymnosperms.

By the end of this period, about 360 million years ago, massive and rapid volcanic eruptions took place, that released an extensively large amount of carbon dioxide into the atmosphere. This eventually lead to a mass extinction event, eliminating nearly 80% of the total living species present on earth.

Thus, the correct answer is option (D).

Alecsey [184]3 years ago
6 0

It is c my friend hope this helps

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Alleles A and a reside at a locus on the same chromosome as a locus with alleles B and b. Aa Bb is crossed with aa bb and the fo
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Answer:

The two genes are linked together

Explanation:

<em>The conclusion that can be drawn about the arrangement of the genes on the chromosome in the Aa Bb parent is that the two genes are linked together. That is, they do not assort independently.</em>

When two genes are linked together, the number of recombinant offspring would be more than the number of offspring with parental traits. The frequency of recombination would also not exceed 50%.

<em>Recombination frequency = number of recombinant offspring/total number of offspring x 100%</em>

Number of recombinant offspring = 45 + 45 = 90

Total number of offspring = 45 + 45 + 5 + 5 = 100

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Hence, the two genes Aa and Bb are said to be linked together.

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3 years ago
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Mrac [35]

Respuesta:

B. pastoreo excesivo de animales de granja

Porque son lugares secos.

Explicación:  

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