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3 years ago

HELP PLEASE ASAP!!!! I don't understand this

Biology

2 answers:

nataly862011 [7]3 years ago

8 0

Answer: D

Explanation: you got the one you click on right so no changes needed.

Cloud [144]3 years ago

3 0

D is the answer
Hope this help

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Which factor is needed for both thunderstorms and hurricanes to form?

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Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o

katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

Control Group doesn't receive any treament or a placebo or a treatment whose outcome is already known;
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For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the others are treatment group.

The variables in a experiment are classified as independents or dependents:

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Dependent Variable is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, dosage of BPA is the independent variable and time is the dependent variable.

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3 years ago

Both human beings and snakes have backbones,but snakes can perform more flexible movements than human beings.Why?

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Bones of snakes are very loosely fused together like in humans. Hence these bones can move individually allowing the snakes to be really flexible. The ribs of snakes do not join like those of humans but instead, have free ends and do not have a sternum.

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Which of the following could be a function of a phagocyte?

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D. Producir anticuerpos específicos para un patógeno

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What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time

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