A. Contagious fatal virus
The most likely source of thermal pollution in a river ecosystem would be <span>the use of water as a </span>coolant<span> by </span>power plants<span> and industrial manufacturers</span>. One harmful effect that this type of pollution has is a sudden change in water temperature (either a rapid increase or decrease) known as "thermal shock."<span>, killing fish and other native animals.
></span>Thermal pollution<span> is defined as the degradation of </span>water quality<span> by any means that changes ambient water </span>temperature<span>.</span>
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Answer:
Hemophilia is an X-linked recessive disease. Let the normal allele be represented as XH and the mutant allele be represented as Xh. Here,
hemophilic male = XhY
hemophilic female = XhXh
When XhY X XhXh the punnett square will be as follows:
Xh Y
Xh XhXh XhY
Xh XhXh XhY
The entire progeny will be hemophilic since only Xh allele was passed on by both the parents.
Phenotypes for Mendelian genetics is 3:1. Genotype would be 1:2:1.