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Scorpion4ik [409]
2 years ago
12

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Biology
1 answer:
aliina [53]2 years ago
3 0

Answer:

b

Explanation:not surre but it shoulb it

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From 1930 to 1939 fire ants spread inland about 60 miles from their point of introduction in Mobile, Alabama. What was the cause
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a natural spread

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In the 1800s, the Irish wolved the problem of feeding a growing population by planting specifically, they a r e
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The potato crop devastation occurred in Ireland for not using one single potato species.

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A farmer wants to know if adding antibiotics to cow feed will fatten them up. He takes two groups of 25 cows each. One group is
galina1969 [7]

Answer:

The correct answer is-

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Independent Variable: Antibiotic pill

Dependent Variable: Weight of cow

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The control group is the group of subjects that did not get the treatment in a scientific study in the case of this study group of cows that receives the placebo pill is the control group and the experiment group is subjects that receive the treatment which is a group with the antibiotic pill.

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