answer.
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
Nina [5.8K]
2 years ago
15

A average sneeze travels at about 100 miles an hour. Rebecca designs an experiment to increase the speed of sneezes. She subject

s four participants to different stimulants: pepper, bright light, pollen, and fizzy soda. While the participant sneezes Rebecca measures how fast air traveled through the nasal passage. What is the control in Rebecca’s experiment? A) The four participants B) The different stimulants C) The speed of a typical sneeze D) The speed of the induced sneezes
Biology
2 answers:
Snowcat [4.5K]2 years ago
8 0

Answer:

The correct answer is option C, that is, the speed of a typical sneeze.

Explanation:

There are three main kinds of variables found in a scientific experiment. These are the independent variable, dependent variable, and the controlled variable. The independent variable is the one that can be manipulated or monitored, the dependent variable is the one, which gets influenced by the changes made to the independent variables, and the control refers to the variable that must be held constant.  

It is important to keep the control variable the same all through the test or the experiment. As any variation in a control variable would invalidate the association between the independent and the dependent variable, thus, hampering the outcomes. In the given experiment, it is known that the speed of a general sneeze is 100 miles per hour, thus, it cannot be changed and can be used as control while performing the given experiment.  

-BARSIC- [3]2 years ago
6 0
The Answer Is C , The Speed Of A Typical Sneeze Is A Proven Fact That Will Not Change 

You might be interested in
In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezi
BlackZzzverrR [31]

Answer: 2. endospores

An endospore is a structure that remains in the dormant state in some bacteria. The term endospore refers to the seed like form, but actually it is not a true spore. Endospore allows bacteria to restrain it's biological activities like obtaining food and reproduction under harsh environmental conditions like freezing and drying. Under favorable conditions these endospores reactivates. The endospore consist of bacterial DNA and ribosome.

4 0
2 years ago
Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles trave
Marrrta [24]

Answer:

Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.

Explanation:

Rutherford concluded from his experiment that there are empty spaces present in most parts of the atom while a heavy positive charge is present in the nucleus of an atom due to which the tiny positively charged particles deflects because of positive-positive charge repulsion. Most of positively charged particles passes undeflected which indicated the presence of empty spaces in the atoms. The electrons revolve around the nucleus have no effect on the deflection of positively charged particles.

3 0
2 years ago
Read 2 more answers
Which food molecule (monosaccharide, polysaccharide, lipid, or protein) would you eat if...
torisob [31]
<span>You needed a quick boost of energy - MONOSACCHARIDE

You wanted to grow strong nails, you haven't eaten in days - PROTEIN

You wanted to grow healthy hair - PROTEIN

You had a race tomorrow afternoon - POLYSACCHARIDE 

You were getting ready for hibernation - LIPIDS

You wanted to get bigger muscles - PROTEIN 

Your meal will be in a week - LIPIDS

CARBOHYDRATES include monosaccharide and polysaccharides. They provide immediate energy boost or short term energy storage for animals as well as long term energy storage for plants. 

PROTEIN s</span>peeds up chemical reactions by lowering activation energy. It is used to form bones and build muscles. It is m<span>ade up of an amino group, a carboxyl group, and an R group.

LIPIDS can be saturated or unsaturated fatty acids. They are not soluble in water however they provide long-term energy storage for animals. </span>
7 0
2 years ago
Several groups of researchers were conducting experiments to study how exercise affects cholesterol levels. One group had colleg
Vesnalui [34]

Answer:

Design more studies testing the effect of duration and intensity of exercise on cholesterol levels in different age groups.

Explanation:

4 0
2 years ago
Imagine you were going to build a “green” building. What features would it have? What would it look like? How would it harmonize
9966 [12]

Answer:

Green building is a modern concept in architecture by means of which it is aimed at construction developments that are not invasive with the environment, or that affect the ecosystem in which they are built as little as possible, with the aim of leaving future generations an intact environment worth living in.

Thus, for a construction to conform to this concept, it must follow the following parameters:

-The construction must adapt to the natural environment, and not this to the construction.

-It has to be resource-efficient. Furthermore, the materials used must not be exploited indiscriminately or causing damage to the environment.

-The external area of the building must respect the natural patterns of the area where it is built, favoring a harmonic view between the building and the surroundings.

-Use of clean and renewable energy to supply the building.

5 0
2 years ago
Other questions:
  • Which of the following eukaryotic intracellular components are not organelles?
    14·1 answer
  • Chemical mechanisms that can turn off or reduce an enzyme are _____.
    11·2 answers
  • How is an ecological footprint determined? a. An ecological footprint is determined by measuring the average amount of land and
    11·2 answers
  • You complete an experiment measuring the spread of the Cordyceps fungus across a forest environment. You measure the amount of g
    8·2 answers
  • A landscaper wants to plant shrubs that require a soil ph of 7.0 near some evergreen trees. which ph would indicate that the soi
    7·1 answer
  • What does barry see when he leaves the hive for the first time
    5·1 answer
  • Barbara is tired all the time and feels overwhelmed by her workload. She is disengaging from her work and fellow employees. Her
    5·1 answer
  • Which of the following does not affect the spatial distribution of a population?
    7·1 answer
  • Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait
    15·1 answer
  • In a soft-bottomed intertidal community, oxygen would be most plentiful for meiofauna in which type of bottom?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!