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sp2606 [1]
3 years ago
13

When Rapa Nui (Easter Island) was colonized by a small number of humans it was covered with trees and abundant food types. Withi

n a thousand years the Rapa Nui population disappeared and the island was grassy. Which of the following is the most plausible cause of the population crash? As the population increased,
a. the different groups warred with each other reducing the overall population.
b. the people used the island as a resting place before moving onto other islands
c. the people cut down the trees for shelter and overused the food available faster than the resources were replenished
d. new immigrants brought a disease with them that caused a fatal epidemic
Biology
1 answer:
Anastaziya [24]3 years ago
7 0
The correct one is C !! As you can also evaluate the reason !!

The people would have cut down trees and start consuming ress and that would be the reason of decreasing tress population and other plamt life with ress !!
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Genotype                Phenotype

     Tt                      Tall stemmed

     tt                       Short stemmed

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<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

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     Tt                 2           Tall stemmed

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