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nordsb [41]
3 years ago
9

What caused the decrease in the global human population in 1400?

Biology
1 answer:
Alinara [238K]3 years ago
4 0

Answer:

<u>Pandemic plague</u>

Explanation:

The Black death or the Great Plague occured during 1347 to 1351 in Eurasia causing death of almost 75 million to 200 million people. The cause of this plague was identified a bacterium known as <em>Yersinia pestis . </em>This plague outbreak was first major European plague pandemic and it killed almost 30% to 60% population of the Europe.

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A diploid cell has two pairs of homologous chromosomes. How many different combinations of chromosomes could there be in the gam
UNO [17]
<h3><u>Answer;</u></h3>

There will be <u>4 different combination of chromosomes</u>

<h3><u>Explanation;</u></h3>
  • <em><u>A diploid cell is a cell that contains two sets of each chromosomes; thus a diploid cell with two pairs of homologous chromosomes has four chromosomes.</u></em>
  • <u><em>Gametes are produced through meiosis which is the type of cell division in which a parent cells divides into four daughter cells each with half the number of chromosomes as the parent, that is the cell are haploid.</em></u>
  • Therefore,<em><u> </u></em><em><u>a diploid cell with two pair of homologous chromosomes will produce four haploid cells after meiosis each with two chromosomes.</u></em>
5 0
3 years ago
Read 2 more answers
Scientists have noted a decline in the number of all mushroom species dating back to the early 1900s. In addition, annual crops
zalisa [80]

The correct answer should be D.) Declines in poisonous, non-edible mushroom species in cool climates. Although question B does provide evidence that Global warming could be the cause of the declines, it still doesn't disprove the theory that overharvesting could be the cause as well. Question C could be caused by a number of things, such as deforestation, a local change in climate, removal of agricultural pests, ect. Question A supports the hypothesis that overharvesting is the cause of the decline, instead of disproving it. Hope this helped!

8 0
4 years ago
Cross-over involves the exchange of genetic information between
Ksju [112]

2 Homologous chromosomes in meiosis, and then replicate into sister chromatids.

Hope this helps, ( or is clear enough ) if not, comment below please!!!!

3 0
3 years ago
What is independent assortment? When does it occur during meiosis?
SpyIntel [72]
It occurs during Anaphase II, Telophase II, and Cytokinesis, when the sister chromatids separate so that there is 1 allele per gamete.
5 0
3 years ago
In Table 9-1, explain the way that ammonia, salt, and water are alike.
baherus [9]
There exists the same question from other source that has the table;

The information in the table are as follows:
Ammonia - NH3
Glucose - C8H12O6
Salt - NaCl
Water - H2O

Ammonia, salt and water are alike because, first they are all compounds. They are composed of two different atoms: Ammonia - N and H, Salt - Na and Cl, Water - H and O
4 0
3 years ago
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