1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
If 10.0 mL of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/mass percent concentration o
Maru [420]

Answer:

Mass/mass percent concentration means the mass of the solute/mass of the solution times 100. You know both the mass of the solute (0.870 g protein) and the mass of the solution (10.279 g solution). So divide and multiply your result by 100.  (0.870 / 10.279 * 100)

Explanation:

7 0
3 years ago
HELP BIOLOGY???
dezoksy [38]

Ans.

The codons show genetic codes, made up of triplet of nucleotides in DNA or RNA that code for specific amino acids. The different codes can code for a same a amino acid. When a substitutional mutation occurs in genetic material, it shows substitution of one nucleotide pair for another and leads to formation of a different codon.

The first mutation that leads to CAU to CAC, it will not show any potential damage as both CAU and CAC codons code for histidine amino acid.

The second mutation that leads to UGU to UGC will also not show any damage to protein as both of these codons code for cysteine amino acid.

The third codon, that results UCU to UUU will cause a potential damage to protein as UUU codes for phenyl alanine (an aromatic, non-polar amino acid) and UCU codes for serine (a polar amino acid).

Thus, the correct answer is 'option C).' as in a protein, substitution of serine with phenylalanine will lead to change in structure and function of that protein.

5 0
3 years ago
Dr. Bennett does an experiment that leads him to invent a machine that can turn salt water into fresh water. It is very slow and
Nat2105 [25]
A. The answer is quite obvious
8 0
3 years ago
Read 2 more answers
Which of the following does not have an impact on Earth's climate?
Arisa [49]
None of the above. :)
8 0
3 years ago
Read 2 more answers
Water has a high specific heat which means that it takes more energy to
ivanzaharov [21]

Answer:b

Explanation:Iknow

4 0
3 years ago
Other questions:
  • Planets in our solar system revolve around the Sun because
    11·2 answers
  • Why do scientists want to classify protists into a different group
    7·1 answer
  • Swelling in the extremities can be the result of water leaving the arterial ends of capillaries faster than it is reabsorbed thr
    15·1 answer
  • I wonder if fish and marine mammals drink salty water
    13·2 answers
  • An atom of element A has 103 protons. What would the element's atomic number be?
    10·1 answer
  • How does an eclipse occur?
    12·1 answer
  • What is the opposite of fragmentation​
    13·2 answers
  • Explain the protective significance of chromosomes condensing into tight coils during mitosis.
    10·1 answer
  • Parts and function of microscope levels of organization comment/remark
    15·1 answer
  • Green plants appear green to human eyes because
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!