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3 years ago

Hi guys can you please help me with number 3 a and b please..ASAP

Biology

1 answer:

Varvara68 [4.7K]3 years ago

4 0

Answer:

Okay so for A the thing that is wrong with this experiment is that Cindy has done quite a few things incorrectly. Firstly what her experiment was about. Being healthy is a good thing but then turning around and doing the exact opposite for a week can damage your body. Secondly, Running 4 miles after school is good but then for the next week she sits and watches tv for 3 hours. It doesn't make sense on how she measured her experiment. Cindy should have recorded the times when she ran four miles and then used the same time to watch Tv for the next week.

We can fix this experiment by maybe taking out the hot Cheetos from it as that's just not healthy. Secondly we can have Cindy record how many minutes/hours she ran in the 4 miles and use those same times to watch Tv so that it's even.

Explanation:

For part B firstly it's just not possible to predict the weather with your feet. Secondly your grandpa could easily lie and tell you their hurting or they could just always be sore. Lastly, His feet could be not sore and it still rains.

We can fix this experiment by may be doing something more realistic. But to stay on this instead of calling him you should maybe stay over so that in the morning you can tell whether or not his feet are sore then record for the rest of the day to see if it rains or not. If their not sore and it rains then we know he can't predict weather with his feet the same goes for if they were sore and didn't rain.

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In mice, a short-tailed mutant was discovered. When it was crossed to a normal long-tailed mouse, 4 offspring were short-tailed

skad [1K]

Answer:

Dominant

Explanation:

Let the allele for short tail trait be represented by "T" and allele for long tail trait be represented by "t"

When a short tailed mutant with genotype "tt" is mated with long tailed mouse, following offspring will be produced -

Tt * tt

Tt, Tt, tt, tt

so the ratio of short tailed and long tailed mouse is 1:1

Here it is given as 4:3 . Hence, there are chances that short tail trait is dominant

In the second generation , two short tailed mouse are crossed. The following offspring will be produced

Tt * Tt

TT, Tt, Tt, tt

The ration of short tailed and long tailed mouse is 3:1

Here it is given as 6:3 i.e 2:1 . Hence, short tail trait is dominant over long tail trait.

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3 years ago

A double-walled sac called the ______ encases the heart, which serves to protect the heart and anchor it inside the chest. vena

OLga [1]

Pericardium is a double walled sac enclosing the heart.

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3 years ago

Why does the respiratory system need to pass oxygen to the blood?

Arisa [49]

It's need to pass oxygen to the blood to the respiratory system work properly I think that the answer

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3 years ago

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What is gobal warming ?

lidiya [134]

Answer:

Explanation:

because global warming is caused by an increase in earths temperature

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2 years ago

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A hypothesis is a ___.

Aloiza [94]

Answer:

A hypothesis is a tentative/ preliminary statement of the relationship between two or more variables. It is a specific, testable prediction about what you expect to happen in a study.

Explanation:

In science, the hypothesis is an idea or explanation that you then experience/test through study and experimentation. Outside science, theory or guess can also be called a hypothesis. The hypothesis is nothing more than an unbridled, wild guess but less than a well-established theory.

So, we can conclude that The hypothesis is a simple statement that defines what you think the outcome of your experiment will be.

Hope this helps.. 

Good Luck!

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