To be honest i really think that it is all of them
Answer:
Magnetic force
Explanation:
Magnetic force is the magnetic feature that can act at a distance on other magnets or objects containing metals.
Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.
However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.
Answer:
Answer:
Balanced polymorphism implies that not the entire population of African Americans are heterozygous for the sickle cell trait.
It is worthy to note that immunity from malaria isn't derived or given to an individual by genes. African Americans do have an higher tendency to show thalassemia, which can't offer immunity to an individual totally from the symptoms malaria.
This case study is an example of Natural selection in humans and unusual hemoglobins and immunity to malaria. The heterozygous persons for the sickle cell gene stands at an higher probability of overpowering or not showing the symptoms of malaria than both classes of homozygous persons.
This implies that for either alleles-the sickling allele and the normal allele-are kept at a relatively constant frequency, implying to the heterozygote possessing a kind of balanced polymorphism. As the homozygous individuals do not show immunity against malaria, it is not justifiable and inadequate to establish a blanket statement that all African Americans are protected from malaria.
Answer:
If soil would not be there on earth then we will not be able to grow plants and if we don't plant trees then we will not get essential products and we will not be able to survive .
Explanation:
