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Vikentia [17]
3 years ago
7

How the size and growth rate of the human population has changed in the last 200 years

Biology
2 answers:
Stels [109]3 years ago
3 0
It changed as more food more games less sleep
Kipish [7]3 years ago
3 0
200 years ago there were less than one billion humans living on earth. Today, according to UN calculations there are over 7 billion of us.1 Recent estimates suggest that today's population size is roughly equivalent to 6.9% of the total number of people ever born.2 This is the most conspicuous fact about world population growth: for thousands of years, the population grew only slowly but in recent centuries, it has jumped dramatically. Between 1900 and 2000, the increase in world population was three times greater than during the entire previous history of humanity—an increase from 1.5 to 6.1 billion in just 100 years.
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Attached earlobes are recessive to free earlobes. If two heterozygous individuals have a child, what is the probability of the c
Sunny_sXe [5.5K]

Answer:

probability of the child having attached earlobes since it is recessive i.e (yy)

=1/4

=0.25 × 100%

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Explanation:

If two heterozygous individuals have a child

i.e let the heterozygous individuals be  = Xy

if both traits crosses together; their F₁ offspring will be;  (XX, Xy, Xy, yy)

Xy  ×   Xy

          X             y

X        XX          Xy

y       Xy            yy

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=1/4

=0.25 × 100%

=25%

4 0
3 years ago
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Answer:

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Explanation:

7 0
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.Proteins can be visualized in many ways, each of which highlights a specific aspect of the protein. Drag the terms on the left
ANTONII [103]

Answer:

1. Space-filling

2. Ribbon model

3. Wire frame

4. Simple shape

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Explanation:

"attached is the question"

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