students set up a controlled experiment. they put up five crickets in each of three identical containers. they set one container to 15 degrees Celsius one to 20 degrees Celsius and one to 25 degrees Celsius then they count the number of chirps in each container during 1 hour
what is the manipulated variable in this experiment
a. the kind of container used
b. the temperature of each container
c. the number of cricket chirps
d. the number of crickets in each container

Answers

Answer 1
I believe that the answer is b
Answer 2

Answer:

the answer is B the temperature of each container


Related Questions

What are mutations, and how can they affect proteins?

Answers

Answer:

A mutation is a change in a DNA sequence.

A mutation can cause the protein to malfunction or to be missing entirely.

I hope it helps.

Sample Response:

Mutations are permanent changes in the DNA sequence of a gene. Mutations can affect the shape of the protein that is produced. A change in the shape of the protein can affect the function of the protein, which may affect the trait that is seen.

An unidentified plant produces spores, has many cells, but does not have true leaves. What plant is it?

A. liverwort
В. fern
C. gymnosperm
D. angiosperm

Answers

Fern is the correct answer

An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.

What are angiosperms?

Angiosperms, that are also known as flowering plants, have “seeds” that are sealed off within an “ovary”, while gymnosperms do not have fruits or flowers and have uncovered seeds on the surface of leaves. Seeds of gymnosperms are often arranged as “cones”.

The features and characteristics that distinguish angiosperms from gymnosperms are fruits, flowers, and “endosperm” in the seeds. Examples of “Angiosperms” are “monocots” like orchids, lilies, agaves, grasses and dicots like, peas, roses, sunflowers, maples and oaks. “Gymnosperm” examples include “non-flowering evergreen” trees like pine, fir and spruce.

Therefore,An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.

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Winters in Minnesota frequently experience
temperatures below zero.

A. Climate
B. Weather

Answers

its b) bc if it was climate it would’ve said like tropical, continental etc.

Which of the following ph values indicates a solution with the highest concentration of hydrogen ions

Answers

Answer:

1,2,3,4,5 and 6.

Explanation:

If a solution having pH values such as 1,2,3,4,5 and 6 indicates that the solution has the highest concentration of hydrogen ions because below pH 7 the concentration of hydrogen ions increases and the solution tends to more acidic. Highest concentration of hydrogen ions are present in a solution having pH 1 and when the pH value increases from pH 1, the concentration of hydrogen ions decreases.

What kind of relationship is there between the oxpecker and a rhino? The oxpecker bird and the rhinoceros have a relationship. The oxpecker receives protection and obtains food from the ticks and other pests infesting the rhino’s skin. The rhino receives in return cleaning and early warning of approaching danger.

commensalism
parasitism
mutualism

Answers

Answer:

Mutualism

Explanation:

Because both of the animals are benefitting from each other.  The bird is getting food and the rhino is getting cleaned.

Human curiosity and creativity have led to improvements in technology.

How have advances in technology affected scientists?


They have helped them develop logical hypotheses.

They have allowed them to prove their theories true.

They have allowed them to make more observations.

They have allowed them to think more critically.

Answers

Answer:

C. they have allowed them to make more observations

Explanation:

Human curiosity and creativity have led to improvements in technology. these advances in technology allowed scientists to think more critically. Thus, Option D is correct.

What is critical thinking ?

Critical thinking is nothing but an analytical mode of thinking  about any subject or problem based on logic, rationality, and synthesis.

By using this style of thinking a thinker can upgrade his quality of thinking, become intuitive.

In science, everyone must be cultivated with this practice by delving and asking questionaries' like where is the evidence?, what is reason behind? why is it so? etc.

Hence these attributes can be learnt through practice to become a critical thinker.

To become a critical thinker, some basic steps should be followed such as clarify the purpose, ask question, analyze by arguments, evaluate the result of arguments, synthesize or conclude from that arguments.

Hence, Option D is correct.

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What is the relationship between the Earth, moon, and Sun during a solar and Lunar eclipse?

Answers

Answer: The relationship between the Earth, moon, and sun during a solar and Lunar eclipse is Lunar eclipses only happen once the Moon is in the opposite direction of the Sun in the sky, a montly occurence, which is known as a full moon.

Explanation: Once the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When this happens, Earth passes directly between the Sun and the Moon, which causes its shadow to create a lunar eclipse.

Answer:

during a luner eclipse the earth comes between the sun and the sun and the moon blockimg the sunlight falling on the moon.

CAN SOMEBODY PLSSSS STILL ANWSER I NEED THIS ASAP BIOLOGY HELP!!!!!!!!!!!!!! BRAILIESTT

Answers

Answer:

C, brainliest plz??

Explanation:

PLEASE HELP ASAP WILL GIVE 20 POINTS ONLY ANSWER IF YOU KNOW THE ANSWER!!!!!!
Describe some home or business technology that use spectrometric equipment to analyze atmosphere or temperature

Answers

Smart home technology is the general term given to basic home amenities that have been fitted with communication technology, enabling some degree of either automation or remote control. It includes things like Home security systems. Environmental controls, like air conditioning, heating, and lighting.
Explanation:
Environmental controls, like air conditioning, heating, and lighting.A spectrometer is a device for measuring wavelengths of light over a wide range of the electromagnetic spectrum. It is widely used for spectroscopic analysis of sample materials. The incident light from the light source can be transmitted, absorbed or reflected through the sample The solution for space exploration is through using mass spectrometers which are used to identify miniature particles present in space. Mass spectrometers are also used in radioactive and carbon dating. When used with gas chronographs, mass spectrometers detect traces of toxic particles and contaminants in air.

If more individuals are born with the advantageous trait in each generation, over time what do you predict will happen to the percentage (%) of the alleles (gene variety) that code for this trait in the population?

Answers

Answer:

The percentage (%) of the alleles that code for this trait in the population will increase, as more individuals are born with the trait.

Explanation:

The more individuals get born expressing the trait, the higher its frequency gets in the population. By generation, there are more individuals carrying the allele for the advantageous trait. These individuals reproduce and increase the probabilities of the progeny to inherit the mentioned allele. When this sequence keeps occurring in the population over many generations, the allele percentage will increase. On the other hand, the other allele or alleles will decrease. Probably, if there are no changes that might influence or affect this pattern, the alleles for the advantageous trait will fixate, while the other allele might get lost.

please help i’ll give the brainliest if you give a correct answer tysm

Answers

Answer:

C. how close earth is to the sun

Answer:

C

Explanation:

What part of the cardiovascular system is directly responsible for nutrient transport?

Answers

Answer:

Circulatory system

Explanation:

It is the body's delivery system, concerned with circulating blood to deliver oxygen and nutrients to every part of the body.

Answer:

blood

Explanation:

I took the test on edg.

will osmosis occur?
if so which direction?​

Answers

The solution in the berzelius glass has a concentration of 50%, the other solution has a concentration of 30%. In osmosis water moves from the solution with a lower concentration to the solution with the higher concentration. Therefore, water will move from the 5%glucose,25%starch solution to the 20%glucose, 20%K⁺,10% iodine.

In osmosis, water always moves from an area of higher water concentration to one of lower concentration.


Question 3

The surroundings where a particular species lives is known as its

1.abiotic zone
2.habitat
3.community
4.biomass

Answers

Answer:

habitat

Explanation:

becous community is for people

Answer:

its habitqt

Explanation:

leqrn this in 2nd grade

HELP

What is a hydrogen bond?

Answers

Hydrogen bonding, interaction of a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces

Answer:

A hydrogen bond is a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

Someone please help me
Question: The organism shown is called Chlamydomonas. What domain does it belong to? Look at the parts. What do they tell you about this kind of organism? ​

Answers

Answer:

it belongs to the Eukarya domain

Explanation:

it has both plant and animal characteristics

The traits studied in the experiments involving the crossing of pea plants are seed shape and seed - Brainly.com
In the chart shown above,16 seeds are produced. Yellow(Y) is Dominant to Green(y) and Round(R) is Dominant to wrinkled (r). Which of the following lists the most likely distribution of phenotypes in these seeds?

A. 6 round yellow seeds : 4 round green seeds :
4 wrinkled green seeds : 2 wrinkled yellow seeds

B. 9 round yellow seeds : 3 round green seeds :
3 wrinkled yellow seeds : 1 wrinkled green seeds

C. 4 round green seeds : 4 round yellow seeds :
4 wrinkled yellow seeds : 4 wrinkled green seeds

D. 8 round yellow seeds : 2 round green seeds :
2 wrinkled yellow seeds : 4 wrinkled green seeds

Answers

Answer: B

Explanation:

can y'all answer option 1 plz

Answers

Woke up one day with my head full of motivations and goals for the day. I started of by waking early in the morning to see my family start to gather resources to build and burn woods. I helped my father collect wood logs, went with my brother to feed animals and lastly played with my siblings. My mother told me “Family is always a priority!” And i understand that virtue now because my family means a lot to me and without them i wouldn’t be here

You have an unknown
substance in the lab. It
conducts electricity well. If
you had to make a guess
about this substance, what
would you guess about it?
A. The substance is most likely a base.
B. The substance is most likely an acid.
C. You cannot determine whether the
Substance is an acid or a base from this
information alone.

Answers

A is the correct answer


will make brainliest help asap
Human blood type is
determined by multiple alleles (A, B, and o) Which ratio would result from a cross between a man with heterozygous Type A blood and a woman with Type O blood?
50% Type A 50% Type O
50% Type AB 50% Type O
100% Type A
100% Type O

Answers

Answer:

Explanation:

1st one

Answer:

In this problem, there is no uncertainty abt the genotype of either parent. A parent of blood type AB has the co-dominant IA and IB alleles. A parent of blood type O is homózygous recessive for the i allele.

The Punnett square for their offspring is shown to the right. The genotypes of their offspring could be either IAi or IBi. Their children could be in blood groups A or B, but not AB or O.

Explanation:

Most-likely the third one.

A beaker of with 115 mL of solution has a temperature of 21 °C. The solution contains 5 g of salt and 115 mL of water. Students added two ice cubes to the solution and stirred the solution with a stirring rod. Which properties of the solution changed as the ice cubes melted?

Answers

Answer:

Properties of the solution which changed

1. The temperature of the solution

2. The concentration of the solution

Explanation:

The properties of the solution that changed are:

1. The temperature of the solution: Once the ice cubes were added, (we will assume that the ice cubes were at 0 degrees Celcius) The system had to attain thermal equilibrium. Hence, the higher temperature of the solution melted the ice, while the ice, cooled the entire mixture.

2. The concentration of the solution reduced.  We need to remember that ice is water. As the ice was added, we were indirectly adding more water to teh solution, thus diluting its concentration

How many total autosomes are present ina
bug's normal karyotype?

Answers

Answer:

The insect species being studied has three pairs of homologous chromosomes. The first two pairs are autosomes; the last pair are sex chromosomes. Sex determination is the same as in humans (XX=female, XY=male).

Explanation:

I hope this helped, Have a Wonderful Day/Night!!!

Secretions from the pancreas contain compounds called lipases. Lipases increase the rate of digestion of lipids.
Lipases are an example of which of the following?
• Enzymes
• Simple sugars
Nucleic acids
• Hormones

Answers

Lipases are enzymes that lead to the hydrolysis of lipids.

If the yellow allele is dominant (Y) and the green allele is recessive (y), what are the possible genotypes of a green offspring?

Answers

Answer:

yy

Explanation:

it can only be yy because you need 2 recessive genes to show a recessive trait.

A plant with Yy genes could pass the recessive genes on, but would still show the dominant trait.

The possible genotype of the green offspring is yy, i.e., recessive one and will express only in absence of dominant allele.

What is genotype?

In a broad sense, the word "genotype" refers to an organism's genetic makeup; in other words, it describes an organism's entire set of genes.

In a narrower sense, the term can refer to the alleles, or variant forms of a gene, that an organism carries.

A genotype is a classification of the type of variant found at a specific location (i.e., a locus) in the genome.

Symbols can be used to represent it. For example, the letters BB, Bb, bb could be used to represent a specific variant in a gene.

In the given scenario, Y is dominant allele which will express in combination with y means the recessive one.

Thus, for expressing the green allele, it should be yy.

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Which organisms should be classified in more than one trophic level?

Answers

A trophies level pertains to the position of an organism in the food chain. Humans are the most dominant organism that belong to more than one trophies level. When we eat plants we become the secondary or the tertiary consumers.

Birds are also organisms that belong to more than one trophies level. When birds eat seeds they become the primary consumer, but when they eat insects they become the secondary or even the tertiary consumers.

HELLPP! ITS BIOLOGY

Answers

Answer:

So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.

Explanation:

In guinea pigs, for the characteristic hair length, short hair is the dominant allele and long hair is the recessive one.

In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:

P: Ss X Ss

Alleles     S     s

S             SS   Ss

s             Ss    ss

Where the offspring is:

50% Ss with short hair phenotype 25% SS with short hair phenotype 25% ss whose phenotype would be long hair.

According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.

In 5-7 sentences, briefly define evolution and natural selection, then analyze the differences between the two concepts.

Answers

Answer:

evolution is change over a period of time

If a fish has 30 chromosomes in each of its somatic cells, how many chromosomes will be in each daughter cell after mitosis?

Answers

Answer:

it would be 60

Explanation:

because if haploid cells double the amount of chromosomes then diploid would do the opposite

Active transport occurs through which type of biomolecule?
Proteins
Lipids
Carbohydrates
Nucleic acids

Answers

Nucleic acids. It is this becasue In my science call today they said this

Nucleic acids is the first answer I know I took the test and got it right

Why would horses from North America settle in southern Russia?

Answers

Are wild horses truly “wild,” as an indigenous species in North America, or are they “feral weeds”—barnyard escapees, far removed genetically from their prehistoric ancestors? The question at hand is, therefore, whether or not modern horses, Equus caballus, should be considered native wildlife.

The question is legitimate, and the answer important. In North America, the wild horse is often labeled as a non-native, or even an exotic species, by most federal or state agencies dealing with wildlife management, such as the National Park Service, US Fish and Wildlife Service, and the Bureau of Land Management. The legal mandate for many of these agencies is to protect native wildlife and prevent non-native species from causing harmful effects on the general ecology of the land. Thus, management is often directed at total eradication, or at least minimal numbers. If the idea that wild horses were, indeed, native wildlife, a great many current management approaches might be compromised. Thus, the rationale for examining this proposition, that the horse is a native or non-native species, is significant.

The genus Equus, which includes modern horses, zebras, and asses, is the only surviving genus in a once diverse family of horses that included 27 genera. The precise date of origin for the genus Equus is unknown, but evidence documents the dispersal of Equus from North America to Eurasia approximately 2–3 million years ago and a possible origin at about 3.4–3.9 million years ago. Following this original emigration, several extinctions occurred in North America, with additional migrations to Asia (presumably across the Bering Land Bridge), and return migrations back to North America, over time. The last North American extinction probably occurred between 13,000 and 11,000 years ago (Fazio 1995), although more recent extinctions for horses have been suggested. Dr. Ross MacPhee, Curator of Mammalogy at the American Museum of Natural History, and colleagues, have dated the existence of woolly mammoths and horses in North America to as recent as 7,600 years ago. Had it not been for previous westward migration, over the 2 Bering Land Bridge, into northwestern Russia (Siberia) and Asia, the horse would have faced complete extinction. However, Equus survived and spread to all continents of the globe, except Australia and Antarctica.

In 1493, on Columbus’ second voyage to the Americas, Spanish horses, representing E. caballus, were brought back to North America, first in the Virgin Islands, and, in 1519, they were reintroduced on the continent, in modern-day Mexico, from where they radiated throughout the American Great Plains, after escape from their owners or by pilfering (Fazio 1995).

Critics of the idea that the North American wild horse is a native animal, using only selected paleontological data, assert that the species, E. caballus (or the caballoid horse), which was introduced in 1519, was a different species from that which disappeared between 13,000–11,000 years before. Herein lies the crux of the debate. However, neither paleontological opinion nor modern molecular genetics support the contention that the modern horse in North America is non-native.

Equus, a monophyletic taxon, is first represented in the North American fossil record about four million years ago by E. simplicidens, and this species is directly ancestral to later Blancan species about three million years ago (Azaroli and Voorhies 1990). Azzaroli (1992) believed, again on the basis of fossil records, that E. simplicidens gave rise to the late Pliocene E. Idahoensis, and that species, in turn, gave rise to the first caballoid horses two million years ago in North America. Some migrated to Asia about one million years ago, while others, such as E. niobrarensis, remained in North America.

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