1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jasenka [17]
3 years ago
13

20 points real answers would be cool, thanks!

Biology
1 answer:
garik1379 [7]3 years ago
6 0

Answer:

In my opinion I would say A cause it sounds more reasonable for me

You might be interested in
Why is the sun important to plant cells
aev [14]
It’s what the plant uses to produce food for itself.
8 0
3 years ago
Read 2 more answers
Will more air inside a basketball make it bounce higher?
marysya [2.9K]

The outcome variable, test variable, and controlled variable for each question is as follows:

  • outcome variable = bounce height; test variable = volume of air, and  controlled variable = basketball
  • outcome variable = cleaning property; =  test variable = type of cleaner, and  controlled variable = cloth
  • outcome variable = heat absorbed; test variable = fabric color, and  controlled variable = amount of sunshine
  • outcome variable =  plant size, test variable = seed size, and  controlled variable = sunlight
  • outcome variable = flower freshness, test variable = sugar added to water, and controlled variable = sunlight
  • outcome variable = adhesion of tape; test variable = differences surfaces, and controlled variable = paper
  • outcome variable =  volcano eruption, test variable =  ratio of vinegar to baking soda, and controlled variable = container or bottle

<h3>What are variables in an experiment?</h3>

A variable is any factor in an experiment that can be manipulated, controlled for, or measured.

There are three types of variables in an experiment:

  • Dependent variable or outcome variable
  • Independent variable or test variable,
  • Constant variable or controlled variable

The Dependent variable or outcome variable depends on changes in the independent variable.

An independent or test variable is the variable that stands alone and is not affected  by other factors in the experiment.

The constant or controlled variable is unchanged.

The outcome variable, test variable, and controlled variable for each question is as follows:

1. Will more air inside a basketball make it bounce higher?

  • outcome variable = bounce height;  test variable = volume of air, and  controlled variable = basketball

2. Do ''green'' cleaners clean as well as store bought cleaners?

  • outcome variable cleaning property; =  test variable = type of cleaner, and  controlled variable = cloth

3. Which colors of fabric absorbs most heat?

  • outcome variable = heat absorbed; test variable = fabric color, and  controlled variable = amount of sunshine

4. Do bigger seeds make bigger plants?

  • outcome variable =  plant size, test variable = seed size, and  controlled variable = sunlight

5. Does sugar added to water improve cut flower freshness?

  • outcome variable = flower freshness, test variable = sugar added to water, and controlled variable = sunlight

6. How do differences in surfaces affect the adhesion of tape?

  • outcome variable = adhesion of tape; test variable = differences surfaces, and controlled variable = paper

7. What ratio of vinegar to baking soda produces the best chemical volcano eruption?

  • outcome variable =  volcano eruption, test variable =  ratio of vinegar to baking soda, and controlled variable = container or bottle

In conclusion, changes done to the test variable results in changes in the outcome variable.

Learn more about test variable at: brainly.com/question/25223322

#SPJ1

6 0
1 year ago
Compare and contrast optical and radio telescope
Umnica [9.8K]

Hallo~~~

When comparing optical and radio telescopes, we know that both of these telescopes detect a certain band of the electromagnetic spectrum.

When contrasting optical and radio telescopes, we know that optical telescopes have higher equipment (polished mirrors, accuracy), and that they depend on weather. Radio telescopes have lower equipment (less precise reflectors), and depend on diff. things such as thermal radiation and man-made emissions.

4 0
3 years ago
Which of the following is a factor that, by itself, does not promote widespread changes in allele or genotype frequencies? a. Ne
defon

Answer:

A new mutation

Explanation:

A mutation refers to the random changes in the DNA of organisms. A mutation changes the allele and genotype frequencies by the introduction of a new allele in the gene pool.

However, mutations are not the major factor responsible for changes in the gene pool of a population as mutations are rare. The rate of mutations is very slow and does not allow it to serve as a major factor to change the allele and genotype frequencies.

8 0
3 years ago
Name 3 characteristics of each physical state of matter.
Andreas93 [3]

Answer:

solid: Has a definite shape and volume. liquid: Has a definite volume, but take the shape of the container. gas: Has no definite shape or volume. change of state: When matter is converted from one of the three states (example: solid, liquid, or gas) to another state.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • In a typical population of gazelle, the average birth rate is 25 new fawns each spring. However, this spring there was a signifi
    10·1 answer
  • Unlike mitosis, meiosis results in the formation of
    14·2 answers
  • In one paragraph, please justify the following argument: “Without the sun, I would be unable to move.” Discuss the processes of
    8·2 answers
  • During the final stage of cellular respiration, 36 molecules of ATP are produced as proteins embedded in the membrane move hydro
    11·2 answers
  • Which organism can most likely be classified in the domain bactacteria
    15·1 answer
  • Please help me out with this one
    15·1 answer
  • PLEASE HELP:( decreasing temperature concentration or surface area will ____ reaction rate.
    15·1 answer
  • Is this right or should I flip the answers?<br> Help please!!!
    7·1 answer
  • How do plant populations affect predators ?
    14·1 answer
  • The process of water moving from the Earth to the atmosphere and back again is called the
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!