If Brittany is investigating how fast Brian will react to three different sounds, the independent variable in the experiment is the time it takes Brian to react.
True or False

Answers

Answer 1

Answer:

False

Explanation:

The independent variables are the different sounds Brittany is making Brian react to.


Related Questions

Opposition to a certain perspective can___

Answers

Answer:

delay or stifle the emergence of the perspective

Explanation:

I hope this helps :)

plz help I will mark you brainlist plz ​

Answers

Answer:

1. Acid

2.  Acid

3. Acid

4. Base

5. Acid

6. Bases

7. acid

8. base

9. acid ( could be both)  

10. acid

*Anybody correct me if I'm wrong*

Explanation:

Why is it incorrect to say that humans evolved from chimpanzees? What would be a more accurate description?

Answers

“There's a simple answer: Humans did not evolve from chimpanzees or any of the other great apes that live today. We instead share a common ancestor that lived roughly 10 million years ago. ... They're on an entirely different evolutionary path.”

If you need to use this rewrite it in your own words

I need help with this one anyone?

Answers

Answer:

Decresed water pressure within the plant cells.

Explanation:

When a plant doesn't get enough water, the pressure inside the stems and leaves drops and they wilt.

What effect does the Coriolis Effect have on surface currents in the Northern and Southern Hemispheres?

Answers

Answer:

Coriolis effect

the result of Earth's rotation on weather patterns and ocean currents. The Coriolis effect makes storms swirl clockwise in the Southern hemisphere and counterclockwise in the Northern Hemisphere.

How is a savanna a natural biome?

Answers

Answer:

The savanna biome, which is a type of grassland biome, consists of areas of open grassland with very few trees. There are two kinds of savannas: tropical and semi-tropical

Explanation:

Is dna same or different between parents and offspring?

Answers

Answer:

It would depend if it's sexual reproduction or asexual reproduction, if it's asexual then it would be almost exactly identical but if it were sexual then it would be quite different as it would be using dna from both parents.

Explanation:

Which of the following statements is supported by the principles of cell theory?

I. Certain cells can form on their own, without requiring a parent cell.
II. Genetic information is passed from a parent cell to a daughter cell.
III. The basic units of all living things are organelles.

Answers

Answer:

the statement that is correct is the lll.

The statement which is supported by the principles of cell theory is as follows:

Genetic information is passed from a parent cell to a daughter cell.

Thus, the correct option for this question is B.

What is Cell theory?

Cell theory was proposed by two famous scientists known as M.J. Schleiden and T. Schwann. The principles of cell theory are as follows:

All living organisms whether plants or animals are made up of cells.A cell is the smallest unit of all living organisms.A Cell is the structural and functional unit of organisms.

This cell theory was further refined by German biologist Rudolf Virchow in 1855. According to him, all cells are arising from a pre-existing cell. A Virus is an exception to the cell theory.

Originally, none of the given statements exactly matches any one of the three principles of cell theory. But the second option reached approximately near around it.

Therefore, the correct option for this question is B.

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Which organs are part of the musculoskeletal system? Select all that apply.

bones
hair
muscles
skin
tendons
nails

Answers

muscles, tendons and bones

Patients with a specific medical condition have been provided with a new device that helps them manage their condition. The patients will be required to participate in a survey regarding the usefulness of the device. How can the manufacturer be certain that no bias enters into the surveys? Group of answer choices

Answers

Answer:

by providing a toll-free number in case there are questions about the devices.

Explanation:

One of the best ways to make certain that this does not happen is by providing a toll-free number in case there are questions about the devices. Doing so makes sure that the customers are fully aware and understand the device and what it is doing. This prevents the customer from assimilating other benefits that they may experience which have nothing to do with the provided device into the survey and potentially contaminating the data with false feedback.

Based on the phylogenetic tree, which of the following statements is true.

see the following image.

a. Species A was probably much larger than any of the other organisms
b. Species G is extinct
c. Species C is the most recent ancestor of species B and D
d. Species F and G are more closely related than Species B and E

Answers

Answer:

a

Explanation:

Answer:

CORRECT (SELECTED)

Species F and G are more closely related than species B and E.

Explanation:

Species F and G share a more recent common ancestor than species B and

when you cut a stem a watery liquid will come out. why?​

Answers

It’s usually latex. Latex is produced in plant vessels.

a pie chart is used when
a. comparing quantities between different groups
b. showing change over time
c. comparing quantity totals
d. comparing parts of a whole quantity

Answers

Answer:

c. comparing quantity totals

Answer:

c. comparing quantity totals

Explanation:

Which kind of cells can become any type of cell in the body?


PLEASE HELP!

Answers

stem cells, i THINK?
Yeah I’m pretty sure it is stem cells

are lipids that serve as chemical messengers.
a
RNAs
b
Enzymes
C Steroids
d Proteins
Check it

Answers

Answer:

C. Steroids

Explanation:

Some lipids such as steroid hormones serve as chemical messengers between cells, tissues, and organs, and others communicate signals between biochemical systems within a single cell.

Answer:

steroids

Explanation:

so c

What is one human body system we can live without?

Answers

Answer: brain

Explanation:  You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.

What is the name of the organelle where photosynthesis takes place

Answers

Answer:

chloroplasts!!!!!

What is a buffer? Why is it useful to cells?

Answers

Buffers are chemicals that help a liquid resist changing its acidic properties when other chemicals are added that will normally cause a change in these properties. Buffers are essential for living cells. This is because buffers maintain the right pH of a liquid.

Buffer are defined as substances that maintain a constant range of pH by the addition of the base and acid. It is important for cells to maintain the osmotic pressure and pH in the cell environment.

What is the importance of a buffer?

In biology, the buffer has been the substances that are organic in nature and are used for regulating and controlling the level of the acids and bases that alters the pH of the system. It plays a crucial role in cells.

It is important for the cell to have a buffer solution, like bicarbonate ions in the blood that maintains the pH and the concentration of the hydrogen and hydroxide ions. It provides regulation of the osmotic balance and maintains the internal environment condition of the cell.

Therefore, the buffer is important for cells.

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If there’s a shortage of food in the area would it be better to reproduce sexually or asexually ? Explain

Answers

asexually so theres less organisms to feed

what will happen when you add colored ice cubes on one side and warm food coloring on the other side of the container. ( this questions is due quick)

Answers

Explanation:

Food coloring added to the center of a beaker of cold water will sink to the bottom. If you stir the cold water, or add the coloring to warm water, it will diffuse much more quickly.

An independent variable is-

Answers

Answer:

A variable (often denoted by x ) whose variation does not depend on that of another.

Explanation:

Think about it like this can you control how you sleep before the test? Or can you control the test score? Hope this helps you!

Which factor is different between the tundra biome and a tundra ecosystem?
A. Soil moisture
B. Climate
C. Size
D. Type of plants

Answers

Answer:

b it is the climate

Explanation:

B the climate

Answer  C.Size

Explanation:

the reason why it is not climate is because the climate is the same. So as the soil moisture. The tundra biome is a bigger size than the ecosystem. The order from largest to smallest level of organism: biosphere,biome,ecosystem,community, population, and last organism.

When offspring produced by sexual reproduction move into different environments, new species sometimes emerge over time. Which characteristic of sexual reproduction allows this result to occur?

A) speed with which offspring are produced
B) number of offspring produced
C) diversity of the offspring produced
D) size of the offspring produced​

Answers

Answer:

c) diversity of the offspring produced.

Explanation:

Because sexual reproduction involves gametes (sex cells with only half the number of chromosomes), each offspring produced is genetically unique (as they get a random selection of chromosomes from both parents). This allows mutations to occur, which may be beneficial (or not) in the environment. Over time, the offspring that have the favourable characteristics will survive more easily to reproduce, whereas those with less helpful characteristics will not. This means that the favourable characteristics will be passed on to the next generation, while the less favourable ones will not be time. If this occurs for many generations, a new species may emerge.

Which best describes a semiconductor? Semiconductors are more conductive than a nonmetal and less conductive than a metal. Semiconductors are more conductive than a nonmetal and less conductive than a metalloid. Semiconductors have a high electrical conductivity. Semiconductors have a no electrical conductivity.

Answers

Answer:

B  Semiconductors are more conductive than a nonmetal and less conductive than a metal

Explanation:

Just took Cumulative Exam

According to the question,   Semiconductors are more conductive than a nonmetal and less conductive than a metal.

What is a semiconductor with examples?

Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called "metalloid staircase" on the periodic table.

Thus, the correct option is "B".

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a. List 3 other species that would be
the same trophic level as the grasshopper.

Answers

Answer:

rabbits, flies and cows, for example

Explanation:

Because they only eat autotrophs (plants)

Hope I helped!!

10. Vestigial structures
Are dangerous and should be removed.
Are fully functional structures in a species.
Are usually present, but are no longer functional.
Have been completely eliminated from the species.

Answers

Answer:

Are usually present, but are no longer functional.

Explanation:

Vestigial structures are "evolutionary remnants". They are anatomical features that were once important throughout the organism's evolution, but now have no function. However, they aren't harmful either, so there has been no selective pressure for them to be removed via evolution.

Good examples in humans are the tail bone, wisdom teeth, and the appendix.

A force of 240 N causes an object to accelerate at 3.2 m/s2. What is the mass of the object?
A.75N
B.75 kg
C.0.013 kg
D.768 kg
Which is the answer?

Answers

Answer:

B.75 kg

Explanation:

Given parameters:

Force on the object = 240N

Acceleration of the object = 3.2m/s²

Unknown:

Mass of the object = ?

Solution:

Force is the pull or push on an object. According to Newton's first law; it is mathematically expressed as;

     Force  = mass x acceleration

The unknown here is the mass, simply input the parameters and solve for it;

       240  = mass x 3.2

           mass  = [tex]\frac{240}{3.2}[/tex]   = 75kg

The mass of the object is 75kg

What happens if there is no oxygen in cellular respiration of glucose?

Answers

Anaerobic respiration is a normal part of cellular respiration. Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. If oxygen is present, the pathway will continue on to the Krebs cycle and oxidative phosphorylation. However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.

Which trophic level has the least available energy in kilojoules in this food web?
А
Phytoplankton
B
Herbivorous zooplankton
С
Baleen whale
D
Killer whale

Answers

Answer:

phytoplankton

Explanation:

2. Describe a situation in which unbalanced forces are acting on an object. What is the net force
on the object, and how does the net force change the motion of the object?

Answers

Answer:

The force is by putting the two same objects on both sides and the motion is the scale

The force is by putting the two same objects on both sides and the motion is the scale.

What do you mean by force?

In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull.

The normal force acts in a direction normal to the surface interaction between objects. Friction is a force that opposes motion on surfaces. Other examples of non-fundamental forces include the elastic force, tension.

Force is the fundamental result of an interaction between two objects, while power is an expression of energy consumed over time (work), of which force is an element.

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