Biology Middle School

5. Read the scenarios below. For each of the scenarios, identify the following (you should identify the 3 for EACH of the scenarios):

Control Group Independent Variable Dependent Variable

A. John thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

B. Candy notices that her shower is covered in a strange green slime. Her friend Belinda tells her that coconut juice will get rid of the green slime. Candy decides to check this out by spraying half of the shower with coconut juice. She sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower.

C. Elisa is working on a science project. Her task is to answer the question: "Does Grow Long (which is a commercial hair product) affect the speed of hair growth?" Her family is willing to volunteer for the experiment.

Answers

Answer 1

Answer:

A.

1) Control Group: Group B (not given the special juice)

2) Independent Variable: Special juice given to Group A

3) Dependent Variable: Number of stacks of papers each group made

B.

1) Control Group: The side of the shower sprayed with water

2) Independent Variable: Coconut juice sprayed on one side of the shower

3) Dependent Variable: Appearance of green slime on both sides of the shower

C.

1) Control Group: No treatment

2) Independent Variable: Grow Long (commercial hair product)

3) Dependent Variable: Speed of hair growth

Explanation:

Related Questions

In what ways are sexual and asexual production in plants similar, and in what ways do they differ?

Answers

Sexual and asexual reproduction both produces offsprings but sexual reproduction is a production between two parents and their offsprings is genetically different from their parent. Asexual reproduction produces offsprings from one parent, so the offspring would be genetically identical to the parent plants.

Answer: Plants reproduce in two ways: sexually and asexually. . By fusing gametes, sexual reproduction generates children. As a result, the offspring are genetically distinct. Asexual reproduction results in the formation of new people without the fusing of gametes.

Sexual and Asexual Reproduction :

Although there are many distinct methods used by living creatures to reproduce, the majority of these methods may be classified as either sexual or asexual reproduction.

Offspring produced by asexual reproduction are genetically identical to either of their parents. Two parents contribute genetic material during sexual reproduction to create distinct children.

There are benefits and drawbacks to both sexual and asexual reproduction, which is why some creatures use both.

Explanation:

A fertile valley has farms and a small town. The valley is surrounded by hills, but these hills are not good for farming or living. Over time, the town expands.

How will the town’s growth most likely affect the availability of farmland in the valley?

1. The availability of farmland will decrease.

2. The availability of farmland may increase or decrease.

3. The availability of farmland will remain unchanged.

4. The availability of farmland will increase.

Answers

3, because the land was already not good for farming.

2. It doesn’t say that you can’t farm on the hills so it’s possible. If they choose to increase housing or other infrastructure then it will stay the same.

Signal Noise
Information in an electronic signal can be affected by noise. Noise is any unwanted disturbance in a signal. If you've ever seen interference when watching TV, then you've witnessed signal noise.

There are many causes of noise, and it can be introduced into a signal when the information is recorded, processed, transmitted, or received.

6. Suppose the analog signal shown here is from a music program on the radio. How do you think the music would be affected by the noise when you listen to it on the radio? Explain

Answers

Answer:

[tex]5( + [/tex]

[tex] \div \div \div \div \div \div \div [/tex]

[tex] log_{ \cot(?) }(?) [/tex]

Answer: The noise in an analog signal can affect the quality of the signal and cause distortion in the original waveform. In the case of a music program on the radio, noise can cause unwanted sounds, such as static, crackling, or hissing, which can interfere with the quality of the music being played.

The effect of noise on the music depends on the level and type of noise, the sensitivity of the receiver, and the quality of the equipment used to process and amplify the signal. In general, the more noise that is present, the more noticeable the degradation of the music will be.

However, it's important to note that some types of music may be more resistant to noise than others. For example, music with a lot of bass or percussion may mask some of the noise, while music with a lot of high-frequency content may be more affected by noise. Additionally, some listeners may be more sensitive to noise than others and may notice the degradation of the signal more readily.

Explanation:

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