Dominic and Eva are using the same type of stopwatches to measure the time it takes for a chemical reaction to occur. They each use the same stopwatch to measure the time. These are their results: Person Trial 1 Dominic 78 seconds Eva 81 seconds Why are their results unreliable and can lead to a pseudoscientific claim? Group of answer choices They did not repeat their tests multiple times. They used the same type of stopwatch. They did not change the reactants in their chemical reactions. Only one person should have collected the data. Quiz saved at 10:43am Questions AnsweredQuestion 1 AnsweredQuestion 2 AnsweredQuestion 3 AnsweredQuestion 4 Haven't Answered YetQuestion 5 Time Elapsed: Hide Attempt due: Sep 25 at 11:59pm

Answers

Answer 1

Answer:

The correct answer is - They did not repeat their tests multiple times

Explanation:

If a scientific process or practice which is fundamentally based on believes or idea that has no valid evidence and not proved scientifically, such type scientific process called Pseudoscience or the false science.

In this case, Both Dominic and Eva performed experiments and recorded different time periods by the same stopwatch for the same chemical reaction.

This could result in an error in the data they get and affect the conclusion or results. To avoid this experiment must be repeated to be sure of the result and eliminate errors.

Answer 2

Answer:

They did not repeat their tests multiple times

Explanation:


Related Questions

What is the correct formula for photosynthesis?

6CO 2 + 12H 2O ---> C 6H 12O 6 + 6O 2
C 6H 12O 6 + 6O 2 + 6H 2O ---> 6CO 2 + 12H 2O
6CO 2 + 12H 2O ---> C 6H 12O 6 + 12O 2
12H 2O + C 6H 12O 6 --->6CO 2 + 3O 2 + 3H 2O

Answers

Answer:

Photosynthesis is a process by which plants and photosynthetic bacteria obtain their food in presence of sunlight from water and carbon dioxide. They produce glucose as the food and oxygen is emitted as the byproduct. The equation for photosynthesis is - 6CO

2

+12H

2

O→C

6

H

12

O

6

+6H

2

O+6O

2

↑.

Thus, the correct answer is 'Photosynthesis.'

Explanation: hope this helps!

define hypogeal germination and Epigeal germination​

Answers

Explanation:

Hypogeal germination is when the plant is germinated under the ground. An example of this would be the pea plant.

epigeal germination is the opposite of that. Germination takes place above the ground. normal bean plants have epigeal germination

what process produces sex cells (sperm and egg)?

Cellular Respiration
Osmosis
Meiosis
Mitosis

Answers

meiosis produces sex cells!
Meiosis. A human cell are produced by a two- part cell division process called meiosis

Where are the tectonic plates located?

Answers

Answer:

The outermost part of Earth's structure is known as the lithosphere. The lithosphere consists of the crust and small portion of the upper mantle. The lithosphere is divided into a number of tectonic plates. These plates move and interact with one another, driven by convectional forces within the Earth.

Explanation:

1. View the cartoon image at right. You’ve been volunteering in a kindergarten classroom, and one of the children asks about the biological levels of organization that you are studying (in random order): tissues, cells, organ systems, organs. From smallest to largest, explain these levels as they relate to the cartoon image below. Remember, it is unlikely the children in this kindergarten class have taken an advanced science course yet so keep this in mind when making your explanation.

Answers

Answer:

May you please include the image, so I can help you?

Explanation:

I need visuals.

Which of the following research questions would not be tested using inferential statistics?

A.
Do more males than females consider sports to be an important part of high school?
B.
How many individuals in the state of Texas earn over $35,000 a year?
C.
Are intelligence and creativity related?
D.
Does the amount of time an individual spends watching television influence fatigue level?

Answers

Answer:

B.

How many individuals in the state of Texas earn over $35,000 a year?

Explanation:

The correct option is (B) How many individuals in the state of Texas earn over $35,000 a year?

What is inferential statistics?

Inferential statistics is a branch of statistics that makes the use of various analytical tools to draw inferences about the population data from sample data.

Inferential statistics is based on the concept of random sampling from a group of population and on the basis of these random samples inferences  or conclusion are drawn.

Such kind of studies are important when taking inputs from each and every member of the population is not possible.

Thus, all the given research questions can be tested using inferential statistics but in case of option (B) the information from each and every person is required to draw the inference.

Learn more about inferential statistics, here;

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Need help with this

Answers

Answer:

her arms are puffy , red and swollen

Explanation:

that is literally a sign :/

How does the human body maintains homeostasis? PLZ help I have a Test this week.

Answers

Answer:

Here are just three of the many ways that human organ systems help the body maintain homeostasis: Respiratory system: A high concentration of carbon dioxide in the blood triggers faster breathing. ... Excretory system: A low level of water in the blood triggers retention of water by the kidneys.

What is a reasoning statement?

Answers

Answer: A reasoning is a form of logical thinking that uses related observations to create a general conclusion.

Explanation:

A life scientist such as a biologist first makes observations and records them.

Which statement BEST explains why few plants grow on a tropical rain forest floor?
A.pollution
B.climate change
C.habitat destruction
D.tectonic plate motion

Answers

Answer:

c            

is correct!

How does niche affect organisms populations in an ecosystem

Answers

Answer:

Without the ecological niches, there would be less biodiversity, and the ecosystem would not be in balance.

Explanation:

A species' ecological niche can be defined as the range of resources and conditions allowing the species to maintain a viable population a more simple definition is if two species have the same niche, one species will exclude the other.

Write a news story of road accident​

Answers

Answer:

15 Killed, 28 Injured in a Bus accident

The bus was going to Nagpur in that the another bus came and crash to the another bus. In this accident 15 people were Killed and 28 peoples are injured.

According to police the people in the Bus, was the people's of a Nagpur. in this accident the police has Declared that there is no mistake of Driver in this accident.

The transport minister of Maharashtra Diwakar Raote Introduced that government will give 2 lakhs rupees to injured family. and 3 lakhs to dead families.

please help please help

Answers

Answer:

It allows passage of particles into and out of the cell.

Explanation:

PLEASE ANYONE I NEED HELP!!!!

what is the net ionic equation and what are the spectator ions of Bel2(aq) + PbSO4(aq) = BeSO4(aq) + Pbl2(s)

Answers

Explanation Worked out

What would happen if no one obeyed
stop signs, traffic lights and speed
limits? Chaos! And, no doubt, someone
would get hurt. Luckily there are
"Rules of the road” in place to keep
drivers safe. Now think about how we
can keep ourselves and others safe
from labels, prejudice and stereotypes.
Come up with your own "Rules of
Respect" that will keep you and others
safe from the harm that labels,
prejudice and stereotypes can do.

Answers

Answer:

1.  Never judge someone by appearance, particularly color or outfit/tattoos

2. Always treat someone with respect as if they are your friend

3. Never presume someone's financial conditions based off of their lifestyle

With these rules, we could theoretically be one step closer to equality.

Explanation:

testing ur knowledge on cats: when cats wag their tales what does that mean
A. They are hungry
B. They are happy
C. They are annoyed
D. They are thirsty

Answers

Answer:

When cats wag their tales it means that they are most likely annoyed.

Which correctly describes the role of histones in eukaryotic cell division?

a) Histones connect sister chromatids.
b) Histones protect the ends of chromosomes.
c) Histones keep the DNA compact and organized.
d) Histones copy the DNA before division begins.

Answers

Histones copy the DNA before division begins is the correct role of histones.

What is Histone?

A chromosome's structural support is provided by a protein called a histone. Long DNA molecules found on each chromosome must fit into the cell nucleus.

To do it, the DNA wraps around complexes of histone proteins, giving the chromosome a more compact form. Additionally, histones are involved in the control of gene expression.

A nucleosome, which is made up of eight histone proteins, can exist. DNA can loop around a nucleosome much like a small spool. Thus, histones are crucial in maintaining the genome's order and neat wrapping inside a cell.

Therefore, Histones copy the DNA before division begins is the correct role of histones.

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Which timeline shows the correct order of contributions made to the discovery of DNA?
(Options are in screenshots below!)

Answers

Answer:

The correct answer is B.

Explanation:

DNA was discovered in 1800, and then scientists studied DNA with X-Rays. After a while, scientists published a 3D model of DNA, and shortly after, scientists decoded DNA genes. So the answer is Option B.

Hopefully, this helps! :D

Ask your question below!

In the 1800s first the discovery of DNA was done, than the X-ray study of the DNA was done, after that the 3-D model of the DNA was developed, and finally human genetic code was decoded in the 1960s.  

• The DNA was initially identified in the late 1860s by Friedrich Meischer, a Swiss chemist.  

• After that Rosalind Franklin and Wilkins studied DNA with the help of X-ray diffraction tool.  

• In the 1953s, the 3D model of the DNA molecule was discovered by Watson and Crick.  

• Finally in the 1960s, Nirenberg and his colleagues at the National Institutes of Health deciphered the human genetic code.  

Thus, the second timeline shows the correct order of contributions made to the discovery of DNA.  

To know more about:

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1. What does photosynthesis do for the plant?
2. What does cellular respiration do for the plant? ​

Answers

Answer:

Explanation:

1.Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

2.The process of cellular respiration allows plants to break down glucose into ATP. The ATP provides the energy they need to carry out various functions. Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose

Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?

Answers

Answer:

its b

Explanation:

Answer: B) Contains mostly cellulose; forms the outer layer of animal cells.

Explanation:

nya

A city wants to reduce groundwater overuse. Which of the following suggestions should the city council make to the community?
A)Create educational fliers about how to properly dispose of toxic cleaning products.
B)Look into drilling personal wells on their own property.
C)Increase the number of public trash cans to avoid littering.
D)Reduce the frequency of lawn watering during rainy seasons.

Answers

Reducing the frequency of lawn watering during rainy seasons will help

reduce groundwater overuse.

Groundwater is found deep below the soil as a result of them seeping into

the ground during rainfall. Some of them are emptied into water bodies such

as seas, oceans etc. Water pumping machines forces the water out for

by individuals.

The use of the groundwater will however be reduced by a reduction in the

frequency of lawn watering during rainy seasons.

Read more on https://brainly.com/question/12225860

What is the jellylike interior of the cell called?
A: mitochondria
B: cell wall
C: cytoplasm

Answers

I believe It is C, cytoplasm

Answer:

The answer is A

Explanation:

Which of the following are true about cancer? Check all that apply.

Cancer cells display contact inhibition.

Cancer is contagious.

Cancer cells divide uncontrollably.

Cancer can spread around the body.

Cancer comes in many forms.

Cancer affects only the elderly.

Cancer cells invade healthy tissue.

Cancer does not obey contact inhibition.

Answers

Answer: I think these are the answers:

- Cancer can spread around the body.

- Cancer cells invade healthy tissue.

- Cancer cells display contact inhibition.

- Cancer comes in many forms.

- Cancer cells divide uncontrollably.

and I think "Cancer does not obey contact inhibition." is one too... I hope this helps! :D

Explanation:

Cancer cells:

• Divide uncontrollably

• Comes in many forms

Invade healthy tissues

• Does not obey contact inhibition

What is cancer?

Cancer is a diseased condition in which uncontrolled cell division takes place.

Cancer are of two main types: benign and malignant.

Benign tumours are localized to a particular organ and thus can be removed through chemotherapy or surgery.

Malignant tumours spread to body parts through blood stream and attack the healthy cells. This property of metastasis is unique to cancer cells.

Normal cells show their contact with the adjacent cells. In cancer, contact inhibition is lost and so they divide in an uncontrolled manner.

Breast cancer, leukaemia, lung cancer etc are some of the examples of cancer.

Cancer is detected through tissue biopsy. X-Rays, CT-Scan, MRI are some other techniques that detect cancer in the body.

Cancer can be treated if diagnosed early. Radiotherapy, chemotherapy and surgical intervention are the part of cancer treatment.

Therefore, cancer is considered a serious medical complication.

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Jackson says, “The really scary things though are the physical, chemical, oceanographic things that are happening.” What does he mean by this?

Answers

I think it is water pollution, fossil fuels, air pollution, carbon dioxide and acid that are damaging our world

Oceanography includes the oceans and sea depicting and analysis or change in the characteristics of water bodies.

By the statement, scary things are happening to the oceans by Jackson means that:

The oceans and aquatic lives are suffering from climatic changes and is undergoing immense physical and chemical changes.

The addition of unwanted wastes, dumps and chemical spills in oceanic bodies are altering the chemical and physical attributes of the water. The habitants of water like fauna and flora are suffering a lot of loss due to changes.

The involvement of human activities has increased water pollution and many other kinds of pollution. Overfishing, oil spills and dumping of waste in water bodies have altered the natural characteristics of water.

To learn more about pollution follow the link:

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Respiration is the process in which organisms break down food to release ____.
a.
energy
c.
sugar
b.
nutrients
d.
oxygen

Answers

Answer: a.  energy!!!

Explanation:

It's me again!! Hope this helped!! :D  

Answer:

Sugar

Explanation:

I am not completely sure but correct me if I am wrong. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Hope it helps!!!!

2. Which of the following are REACTANTS in PHOTOSYNTHESIS? ​

Answers

Answer:

Carbon dioxide, sunlight and water

Explanation:

that is right

Who knows how to do this?

Answers

Answer:

respritory and immune

Explanation:

took the test

Answer:  6. the first one ,the third one ,

Explanation:

7.immune or respitory since her breathing is fast

what is the goal of seed dispersal? 10 points
A. to help plants grow more quickly
B. to have new plants that grow far away from parent plants so that they dont compete for resources
C. to spread different species of plants to different parts of the world
D. to spread seed evenly to a given area

Answers

Answer:

B. to have new plants that grow far away from parent plants so that they dont compete for resources

Explanation:

what is a substance that increases the hydrogen ion concentration in a solution.

Answers

Answer:

Explanation:

Acid. is a substance that increases the hydrogen ion concentration in a solution.(hight H+ concentrations) ~When hydrochloric acid is added to water, hydrogen ions dissociate from chloride ions: HCl -> H+ + Cl− ~Addition of an acid makes a solution more acidic.

Help plz asappppppppp

Answers

Answer:

A. Whales evolved from four-legged animals.

Explanation:

I'm 100% on this one, because on Plato we were learning about evolution, and one of the slides said that whale had evolved from four legged animals.

Hope this helps ya!!!

Got a screenshot for proof!

A is correct answer
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