what essential characteristics does a good experiment have?
A. control group is given the experimental treatment.
B. a single variable is tested
C. a control is used
D. both B and C ​

Answers

Answer 1

Answer:

Answer is both b and c

Explanation:

Good experiments have two essential characteristics: a single variable is tested, and a control is used. The variable is the factor that changes in an experiment in order to test a hypothesis.

Answer 2

Answer:

D. both B and C

Explanation:

The control group is not to be altered as to have true results for comparison/differentiation.


Related Questions

PLS HELP ME ANSWER THIS AS FAST AS POSSIBLE!!!!

Answers

Answer:

Na,

知りません

Explanation:

Answer:

I cant really see the first answer choice clearly but if it says are composed of at least one cell that's the right answer

Why can’t viruses maintain their own homeostasis?

Answers

Because viruses aren’t made of cells they cannot maintain their own homeostasis

What causes an earthquake?


hard collisions between tectonic plates


buildup of pressure between tectonic plates


buildup of magma


extreme rock deformation

Answers

Answer: ( B. ) build up of pressure between tectonic plates

Explanation:

Which of the following would test positively with Benedict’s reagent?

A. Corn starch polysaccharide
B. Lactose disaccharide
C. Glucose monosaccharide
D. Vegetable oil-lipid

Answers

C glucose monosaccharide

I need a paragraph on earth days years and seasons

Answers

January
February
March
April
May
June
July
August
September
October
November
December

Urgent please help!!!!!

Answers

I think the answer is most likely be J.

The first (F) one the population of the predator increases hugely while the population of the prey was neutral. And so both population didn’t seem to have any connection. Same goes for H. Graph G doesn’t make sense at all the population of the prey didn’t exist throughout the time in the graph but only exist in one single point of time and then just vanish again so that shouldn’t be the answer either.
In graph J, you can see the correlation between the two populations as the predator goes up and so does the prey.
You can search up on google predator-prey relationship graph to get better understanding.

Need help i don't understand

Answers

Answer:

I don't have answer to this but i'll make you understand it says how Robert Hooke finding is different from the other scientists like schleiden ? what do you prove the discoveries of the scientific world ? you just have to type that in the Blank space.

How do organisms use oxygen

Answers

Organisms that use oxygen need it for cellular respiration, in which energy is released from glucose. Energy is needed by the organism for growth, mobility and reproduction.

Answer: Almost all living things need oxygen. They use this oxygen during the process of creating energy in living cells... Animals form other half of the oxygen cycle. We breathe in oxygen which we use to break carbohydrates down into energy in a process called respiration.

Explanation:

What determines the carrying capacity of an ecosystem?
a. the number of different types of organisms in an ecosystem
b. the amount of available resources
c. the square mileage it encompasses
d. the ratio of biotic to abiotic factors

Answers

Answer:

the answer is B. the amount of available resources

Explanation:

The carrying capacity of an ecosystem determines the amount of available resources. Therefore, option B is correct.

What is an ecosystem ?

The term ecosystem is defined as the community or group of living organisms that live together and interact with each other in an environment. The biotic and abiotic components are linked together through nutrient cycles and energy flows.

Ecosystem plays an important role to purify our air, maintain our soil, regulate the climate, to clean our water, recycle nutrients and provide us with food. They are at the foundation of all civilization and sustain our economies.

The carrying capacity of an ecosystem determines the amount of available resources. Carrying capacity depends on many abiotic and biotic factors in the ecosystem.

Thus, option B is correct.

To learn more about the ecosystem, follow the link;

https://brainly.com/question/13979184

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Building Polymers

Monomers are the building blocks of larger molecules called polymers. A polymer consists of repeating monomers bonded to each other with covalent bonds.


Use the drawpad to connect each monomer to its polymer.

Answers

Answer: I'm doing the same homework. I'm pretty sure that the 6 hexagons are the startch glucose. Try page 2

Explanation:

Each monomer is correctly connected to its polymer in the attached image in which amino acid is attached with protein, the nucleotide is connected to DNA, the fatty acid is attached to fat or lipid, and glucose or sugar is attached to carbohydrates.

Monomers are the basic unit or building blocks of larger molecules known as polymers. Polymers are made up of two or more monomers or long chains of monomers attached together.

The macromolecules are polymers and made up of their particular monomers:

Proteins made up of amino acids: In the protein structure there are many amino acids are joined together with help of peptide bonds and due to this, it is also called a polypeptide chain.Nucleic acid (DNA) is made up of nucleotides- nucleotide monomers bind together and form chains of the nucleotides.Fat made up of fatty acids: Fats or lipids are polymers made up of long chains of fatty acids,carbohydrates made up of glucose monomers: glucose or other monosaccharides bind together to form polysaccharides or carbohydrates.

Thus, the correct answer is attached as the image.

Learn more about polymers:

https://brainly.com/question/2762383

As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. which characteristic of water causes adhesion? Help

A ) Cohesion

B ) Solvent capabilities

C) ability to change state

D) Hydrogen bonds

Answers

The answer is hydrogen bonding, so D

As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. The characteristic of water causes adhesion is hydrogen bond. Thus, option D is correct.

What is water?

Water has been defined as the water present in the underground water below the soil as well as in the crack of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are known as hand-dug wells, springs, and drilled boreholes.

The water stored under the ground has been obtained from rain and stored in ground so that it can be used later. Ground water has observed very clean and fit for drinking and the reason has been the soil present on top and work as filter and the groundwater is free from all microorganisms.

The use of groundwater is just to wash dishes and cooking utensils in cold, soapy water,Use a disinfectant wash cloth to clean the refrigerator. Rinse and wash contaminated clothing separately.

Therefore, As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. The characteristic of water causes adhesion is hydrogen bond. Thus, option D is correct.

Learn more about water here:

https://brainly.com/question/28465561

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bio Trad Pretest Case Ms 2020-2021​

Answers

Answer:

what

Explanation:

Answer:

So your question is?

Explanation:

4)
All of the following pieces of equipment EXCEPT for
another.
could be useful for transferring a liquid from one container to
A)
beaker
B)
flask
petri dish
D)
graduated cylinder

Answers

Answer:

The answer is C. Petri Dish because a beaker, flask and graduated cylinder all hold liquid and can be transferred.

cats falling out of windows experimental design worksheet answers?​

Answers

Answer:

Feline High Rise Syndrome

Explanation:

FHRS is found in cats usually when they fall from great height or steep elevation. The cat can incur injuries to itself when they fall. This occurs when they fail to jump properly or miss the jump while landing. The nature of cats is usually athletic and they take risks for their jumps. If the cat misses a jump they fall from the height which results in severe injuries to it and sometimes causing death.

Please answer the following questions. ✨WHEN I CAN I WILL MARK BRILLIANT✨


_____ is the study of the relationships and interaction of living things with their environment.


An ______ consist of all the living and nonliving things that interactwith one another within a given area.


A _____ is made up of all the living organisms in an ecosystem.

Answers

Answer:

1)Ecology

2)Environment

3)Ecosystem

Explanation:

What do you think is needed for a seed to grow into a sprout? This process is called germination

Answers

Water is needed for germination in all plants. Germination is usually best in wet soil and around sunlight once it sprouts.

Hope this helps

Describe the structure of an amino acid. What makes each of the 20 amino acids unique?

Answers

Answer:

Amino acids are molecules used to build proteins. All amino acids have a central carbon atom surrounded by a hydrogen atom, a carboxyl group (COOH), an amino group (NH2), and an R-group. It is the R-group or side chain that makes each of the 20 amino acids unique.

PLEASE MARK AS BRAINLIEST

what is the function of neurons in the nervous system? ¿Cuál es la función de las neuronas en el sistema nervioso?

Answers

Answer:

Función de las neuronas. Las neuronas tienen la capacidad de comunicarse con precisión, rapidez y a larga distancia con otras células, ya sean nerviosas, musculares o glandulares. A través de las neuronas se transmiten señales eléctricas denominadas impulsos nerviosos.

Explanation:

evaluate 207.3×0.04​

Answers

the correct answer is 8.292

What is a nucleus in a cell

Answers

The nucleus is a membrane enclosed organelle found in most eukaryotic cells,which stores the genetic material .
A nucleus is a membrane enclosed organelle in eukaryotic cells which stores dna.

IN YOUR OWN words define science

Answers

Science is anything related to the study of anything in the universe which can be explained and tested through experiments and mathematics
Science is anything you have to study to get the accurate information to.

2. If you notice a strange smell in your house, what should you be most alert for?
A gas leak
A mold colony
An electrical short
There's no need for concern

Answers

Hey I’ll help you answer : a gas leak

Answer:

A gas leak

Explanation:

The two most common source of a rotten egg smell are a natural gas leak.

What conclusions can be drawn about the existence of carbon-12, carbon-13, and carbon-14? A) These are forms of carbon and they accommodate 6 neutrons and 6 electrons but each contains a difference number of protons - 6, 7, and 8 respectively. B) These are configurations of carbon and they have 6 protons and 6 neutrons but each contains a difference number of electrons - 8, 7, and 6 respectively. Eliminate C) These are isotopes of carbon and they all contain 6 protons and 6 electrons but each contains a difference number of neutrons - 6, 7, and 8 respectively. D) These are allotropes of carbon and they consist of 6 protons and 6 electrons but each contains a difference number of neutrons - 8, 7, and 6 respectively.

Answers

Answer:

C.

Explanation:

All these carbon atoms are isotopes: they have the same amount of protons (in this case, 6 because carbon always has 6 protons) and the same amount of electrons (6 because the carbons given have a neutral charge).

Therefore, the only thing we are changing is the atomic mass and the amount of neutrons present in each isotope.

In Carbon-12, there are 6 protons, 6 neutrons, and 6 electrons.

In Carbon-13, there are 6 protons, 7 neutrons, and 6 electrons.

In Carbon-14, there are 6 protons, 8 neutrons, and 6 electrons.

Answer:

These are isotopes of carbon they both contain 6protons and 6electrons but each contains a diff about of neutrons 6,7 and 8 respectively

Mention 5 factors that
cause climate change

Answers

1)Strength of the sun
2)Changes of the earths orbit
3) Changes in the orientation of the axis of the rotation
4)Quantity of the greenhouse gases in the atmosphere
5)Carbon dioxide content of the oceans

scientists can determine whether a colony of sea anemones was produced sexuallyor asexually

Answers

Answer:

I think the answer is Asexually

Sea anemones reproduce Asexually

How are humans and amoebas similar?

Answers

Answer: An amoeba is a microscopic protozoan that is found in both terrestrial and aquatic environments. Amoebas are at the bottom of the food chain, providing nutrients for other living things. Humans are members of the primate family and are the most intelligent living things on Earth.

what are the main functions of the liver.​

Answers

production of bile, production of certain proteins and cholesterol

Answer:

1. Detoxification center

2. Production of bile

3. Storage of glycogen

4. Synthesis pf Proteins

5. Metabolism

6. Cholesterol production

7. Destruction of erythrocytes.

Viruses are considered to be___________ because________________

Answers

Answer:

Viruses are considered to be non-living because they arent

Answer:

I think it's viruses are considered to be non-living because a virus can't reproduce by itself. It must hyjack a cells system to be able to reproduce.

describe in short about periodic table​

Answers

Explanation:

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. ...

The columns, called groups, contain elements with similar chemical behaviours.

hope it will help u ✌️

Inputs and outputs of a system include energy, matter, and information
O True
O False

Answers

The answer is true


I just took a quiz
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