Biology, 16.07.2019 13:30 milkshakegrande101

Can someone me out a scientist is designing an investigation to study the impact of predatory trout on the population of the mountain yellow-legged frog in a recreational nature park. what is most likely the test variable (independent variable) for the study? frog population plant population trout population tourist population

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Answer from: chickenndle7814

Trout population

Explanation:

In any scientific study you will have at least one independent and one dependent variable. Independent variables do not change in function of other variables in the study, while dependent variables change when the independent variable changes. In the proposed study, if the scientist wants to find out the impact of trout population on the yellow-legged frog population, what they really want to find out is how much the frog population changes when the trout population changes. This means that the trout population doesn't depend of any other variables in the study, so it's independent, while the frog population depends on the trout population, so it's dependent.

Answer from: Oliviapuffinburger33

The trout because the trout affect the population of the frogs so their for if you lower the population of the trout it would raise the population of the frogs and visversa.

Answer from: Quest

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar flies (drosophila). one sample revealed an anomaly: a white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs) produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.

Answer from: Quest

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.

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Can someone me out a scientist is designing an investigation to study the impact of predatory trout...

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