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kow [346]
3 years ago
15

A population of shrimp suddenly starts collapsing. a biologist believes that toxins in the food chain are interfering with larva

e development. a climate scientist believes that a change in water temperature is depleting food sources from the water. why are both of these options valid scientific hypotheses?
Biology
2 answers:
alexgriva [62]3 years ago
8 0
Because they make sense and they can be proved
zzz [600]3 years ago
8 0
Each explain a logical explanation as to why a population decrease would occur. Toxins would kill off prey or even predator, making populations drop. A change in temperature also explains a population drop as the current known species of the area wouldn't be able to cope with the sudden change. Hope this helped.
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4

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<em>The number of progeny expected to display the dominant phenotype for both the A and B genes should be  4.</em>

<u>A test cross usually involves crossing an individual whose zygosity is in doubt with an individual that is recessive for both alleles so as to ascertain the zygosity of the former.</u> Hence, for a test cross involving AaBb:

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