Answer:
because
Explanation:
Destiny of the ice is less than density of water.so, it's float
As parent's genotypes are missing here, alleles cannot be estimated in offspring, but it is possible to use the example above to estimate it.
<h3>What is a Punnett square?</h3>
A Punnett square is a diagram used in genetics to estimate genotypic and phenotypic frequencies in offspring from a given genetic cross.
In order to estimate offspring allele frequencies, we need to know parental genotypes by means of a Punnett square.
For example, if both parents are heterozygous for a gene whose alleles are called 'A' and 'a', the Punnett square in offspring is:
A a
A AA Aa
a Aa aa
In this case, 50% of offspring will be heterozygous (genotype 1/2 Aa), whereas 25% will be homo-zygous dominant (1/4 AA) and 25% will be homo-zygous recessive (1/4 aa).
In conclusion, as parent's genotypes are missing here, thereby alleles cannot be estimated in offspring, but you can use the example above to estimate it.
Learn more about the Punnett square here:
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The possible cause for a decrease in ecosystem productivity is : B. a decrease of the biodiversity o an ecosystem
Decrease in biodiversity means that there will be less organisms that support each other to maintain the balance in the ecosystem, which eventually decrease its productivity
Biosphere is one of the layers surrounding the earths surface where life exists. It represents the ecological system intergrating living things and their interactions with the environment relating to the other layers (hydrosphere, atmospheres, geosphere and the lithosphere). Photoautotrophs are organisms that make their own food using sunlight in a process called photosynthesis. They are responsible for the food supply in the biosphere.