please help ill mark as brainliest!! what was used to heat many homes and buildings before forced air systems became popular?

a. conductors
b. air comfort solutions
c. convectors
d. radiators

Answers

Answer 1
A
hope this helps :)
Answer 2

Answer: d radiators is the answer


Related Questions

4. The age of the Canyon Diablo meteorite was determined by
A) carbon-14
B) uranium-235
C) hydrogen-3
D) potassium-40​

Answers

Answer:

B) uranium-235

Explanation:

The age of the Canyon Diablo meteorite was determined by potassium-40​. Therefore, the correct option is option D.

Before entering Earth's atmosphere, the Canyon Diablo meteorite is thought to have weighed about 300,000 tonnes. It was most likely a component of the asteroid belt that lies between Mars and Jupiter. The Canyon Diablo meteorite is frequently linked to the Asteroid 1 Ceres, one of the biggest bodies in the asteroid belt. The Canyon Diablo meteorite is notable in particular for the effect it had when it collided with the Earth's surface. The Barringer Crater, which has a diameter of roughly 1,200 metres and a depth of 170 metres, was generated by the collision.

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help me with this asap please.

Answers

Answer:

I don't understand the question you sent me


Knowing that the teenage brain rewards risk is:

-a warning to make choices carefully.

-an excuse to make bad decisions.

-not relevant because parents make all decisions for their teens.

-a reason to lower the drinking age.

Answers

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

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Which of the following information would be most useful in determining whether 2 species are closely related?

A) There leg bones look very similar
B) The age of their bones, determined by carbon dating, is the same
C) The dna sequence found in their bones varies by only a few genes
D) The bones were found in the same layer rock

Answers

The answer is A...............

The most helpful way to determine whether two species are closely related is by comparing the appearance of their leg bones which is called as the Analogous structure. So, the correct option is A.

What is an Analogous structure?

In contrast to homologous structures, analogous structures are characteristics of different species that have evolved in response to a similar environmental challenge and are similar but not necessarily in structure.

Example of Analogous structures are an insect's wings and a bird's wings are similar in structure. Although each of these species utilize their wings to fly, the origins of their wings are different.

For the aforementioned example, examining the appearance of two species' leg bones will most accurately reveal whether two species are closely related.

Therefore, the correct option is A.

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Genetic mutations can occur during meiosis and be passed on to the next generation. What is a benefit of this process?

Answers

Answer:

The benefit of this is let's say theoretically you're mom got small pox at age 10 and gave birth to you at age 35 her DNA was built up to withstand small pox if she gets it again. If a small amount of her DNA is in you then chances are she passed that immunity to you and you have mutation for the better.

Answer: Genetic variation is increased.

Explanation: Just took the test and it was right.

help help

How long does it take bacteria to become 1 million bacteria (IN MINUTES)

Answers

400 minutes under the right conditions


What is an example of biotechnology? What example from the Gene Editing article explains how biotechnology can be used for carbohydrates, lipids, and proteins?

Answers

Answer:

Synthetic insulin and synthetic growth hormone and diagnostic tests to detect various diseases are just some examples of biotechnology

Example of Gene Editing is Dalmatians, which often carry a genetic mutation that makes them prone to suffer from bladder stones.

?

Explanation:

HAVE A GOOD DAY

( PLEASE HELP ME) The image represents a gene sequence for a section of DNA.
DNA Strand
A C GTT G C AT A GT
How does a gene sequence affect the function of cellular processes? Place the steps in order to explain this relationship.
1
3.
4
Base triplets code for a single amino acid.
Connecting amino acids form proteins.
Amino acids are linked based on the genetic code.
Proteins make up most enzymes which regulate cell processes,​

Answers

Answer:

1. Base triplets code for a single amino acid

2. Amino acids are linked based on the genetic code.

3. Connecting amino acids form proteins

4. Proteins make up most enzymes which regulate cell processes,​

Explanation:

Genes, which are found in DNA, holds the information needed for every life process in an organism. However, the information in this gene needs to be utilized via a process called GENE EXPRESSION. Gene expression involves two processes namely; transcription and translation.

In transcription, information on DNA is copied into an mRNA strand, which is then used to synthesize an amino acid sequence in the translation process. The amino acids are joined together in a peptide linkage to form PROTEIN, which is responsible for regulating the cellular processes that occur in our cells. In a nutshell, the process is summarized as follows:

- Base triplets code for a single amino acid e.g. AUG codes for methionine

- Amino acids are linked based on the genetic code

- Connecting amino acids form proteins

- Proteins make up most enzymes which regulate cell processes.

In Hereford cattle, one gene determines whether or not a cow will have horns. The allele that produces horns is recessive (h), and the allele
that results in no horns is dominant (H).
If 2 heterozygous cows mate, what are the predicted phenotypes of their offspring?

Answers

Answer:

C 25%horns 75%no horns

Explanation:

using a punnet square for 2 heterozygouse cattle

      H       h

H    HH     Hh

h     Hh     hh

What would happen to a vascular plant if there were not structures to move the materials throughout the plant?

Answers

Vascular tissues of plant are xylem and phloem. If xylem will be damaged then plant will not be able to transport water from soil through roots to leaves. If phloem will be damaged then nutrients produced during photosynthesis will not be able to reach each and every part of the plant body.

Tortoises found on the Galapagos Islands can have varied phenotypes. One of the variations in the phenotypes is with regard to
their shells. They can have a domed shell with a hood above the head. The shells without domes lack the hood above the head,
such that the tortoise's neck is always pointing downward. A group of evolutionary biologists studied the tortoise population for
generations on these islands. The study coincided with a severe drought in the area that lasted many years. The data for the
changes in tortoise shell shape is shown here. Evaluate the data and select the statement that is best supported by this data.

Answers

Answer: B:The drought decreased the grass and vegetation on the ground, leaving only vegetation on shrubs and trees above the ground. Natural selection selected for the tortoises with the domed shells and hoods.

Explanation:

Answer: b

Explanation:

The pitcher’s mound in baseball is 85m from the plate. It takes 4 seconds for a pitch to
reach the plate. How fast is the pitch?

Answers

Answer:

21.25 m/s

Explanation:

Which natural resource is renewable?
A. coal
B. wind
C. topsoil
D. oil

Answers

Wind because you can always get it make with photosynthesis

Wind is the natural resource which is renewable. Therefore, option (B) is correct.

Wind energy is considered a renewable resource because it comes from the natural flow of air masses caused by the sun and the Earth's rotation. Wind turbines turn the kinetic energy of the wind into power, and as long as there is wind, this process can keep going forever.

Wind doesn't run out like coal and oil (options A and D), which are both solid fuels. Topsoil (choice C) is an important resource for agriculture, but it can be worn down or eroded over time, making it non-renewable in the short run if it is not managed well.

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Sort the different functions of the mouth and stomach.
Mouth
Stomach
Proteins are broken down.
Food is squeezed.
Food is mixed with acid.
Carbohydrates are broken down.
Food is cut into pieces.
Food becomes moist

Answers

Mouth: food is cut into pieces, food become moist, food is squeezed

Stomach: proteins are broken down, carbohydrates are broken down, food is mixed with acid

15. What must occur in order for genetic material to be passed to cells during cell division?

A DNA replication
B RNA synthesis
C osmosis
D diffusion

Answers

Answer:

A

Explanation:

the process involves replication of cell's chromosomes, segregation of the copied DNA and splitting of parent cell's cytoplasm

In order for genetic material to be passed to cells during cell division, DNA replication should take place, as in Option A, and the passing of genetic contents varies between mitosis and meiosis.

What is the significance of DNA replication in cells?

DNA replication is the process by which the genetic contents of a cell, the DNA, are copied which is a crucial process that occurs in all living organisms and is necessary for the maintenance of their genetic information and the transmission of this information to the next generation, it is essential for cell division and growth, as well as for the repair of damaged DNA and plays a central role in animals and plants, as new life can form and cell division takes place due to this process.

Hence, in order for genetic material to be passed to cells during cell division, DNA replication should take place, as in Option A, and the passing of genetic contents varies between mitosis and meiosis.

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What is gene flow?

Helppppppppppp

Answers

Answer:

A the movement or organisms or their genetic material from one population to another

Answer: number 1

Explanation:

In population genetics, gene flow is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies and therefore can be considered a single effective population.

what is process of forming an exact copy of the dna molecule called?

Answers

it’s:
dna replication

An inherited characteristic that allows an organism to better survive is called a(n)–
a. mutation.
b. recombination.
c. adaptation.
d. evolution.

Answers

Answer:

Its adaptation

Explanation:

An inherited characteristic that allows an organism to better survive is called an adaptation. Thus, the correct option for this question is C.

What do you mean by Inheritance?

Inheritance may be defined as a type of biological process through which traits or characters are transferred from one generation to another. It is also known as heredity.

According to the context of this question, the mechanism of adaptation involves an action of modification of an organism or its parts that significantly makes it more fit for existence or survival. This process of adaptation is passed from generation to generation, i.e. inherited from parents to offspring.

Therefore, an adaptation is an inherited characteristic that allows an organism to better survive. Thus, the correct option for this question is C.

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What do the diagrams illustrate about the process of transgression?

of rock erode over time
B layers of rock build up over time
C layers of rock rise relative to the original shoreline
D layers of rock lower relative to the original shoreline

Answers

The answer is C. Luv the higher the shoreline the move sand and rocks there is being pushed and washed there ^_^

The greatest amount of energy is released by the...

Answers

The greatest amount of energy is real eased by the :Oxidation of glucose to carbon dioxide and water. (I’m not exactly sure what your talking about so sorry if it wrong!)

Two-Part Question: Which of the following
isotopes is best suited to determining the age of a Coelophysis fossil AND does any isotope follow
the relationship described in the graph above (yes -or- no)?
(A) carbon-14 (yes)
(B) potassium-40 (yes)
(C) carbon-14 (no)
(D) potassium-40 (no)

Answers

i think it’s B i’m pretty sure

Two brown eyed parents (Bb) have a baby, What are the genotypes of
the offspring?

Answers

Answer:

the genotype with be BB Bb Bb bb

Explanation:

Well after drawing a punnet square you will see that Brown eyes is the dom trait. And the ratio would be 1:2:1

How do divisions in the geologic time scale differ from the way we organize time using a clock?

Answers

Explanation:

The Earth's geologic past is divided into hierarchical time periods. This hierarchy comprises eons, eras, times, epochs, and ages, from largest to smallest. The Cenozoic, Mesozoic, and Paleozoic Periods are the three main divisions of the Phanerozoic.

The geological timescale is the official earth clock and differs from the way we organize time using a clock, as the planet's time is too long for us to use measures of hours.

Geologic timescale

Planet Earth is about 4.5 billion years old. To better understand its history, scientists divide geologic time into five levels of classification, called chronostratigraphic units:

EonsErasPeriodsEpochsand ages.

Eons are large and indeterminate spans of time and are divided into four classifications:

Phanerozoic (last 542 million years)ProterozoicArcheanand Hadean.

Of them, only the Hadean is not divided into ages. The ages are characterized according to the different positions of continents, oceans and their living beings. Within the ages are divided in the periods. Epochs, in turn, are divisions within periods and are divided into ages. According to the researchers, we currently live in the Quaternary period of the Cenozoic era.

To get a rough idea of ​​how much the existence of the human being is a mere recent episode in Earth's geological time, we use some analogies. For example, if the entire history of the planet were summarized in the twenty-four hours of a day, the existence of humanity would have occurred in the last three seconds of that same day.

Understanding the dimension of geological time and its scales of measurement becomes a fascinating mental exercise to better understand the role of man in relation to this temporality and his role as heir of all the transformations that have taken place in terrestrial space throughout the geological ages.

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How can genes be turned on and off?

Answers

Answer:

please give me brainlist and follow

Each cell expresses, or turns on, only a fraction of its genes at any given time. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as gene regulation.

Two related species metabolize glucose using the exact same pathways (glycolysis, citric acid cycle, oxidative phosphorylation). Experiments show, however, that species A generates only 83% of the ATP compared to species B when provided with the same amount of glucose. What could be a potential reason for this outcome

Answers

Answer:

The correct answer is - there is a 12-Carbon ring in ATP synthase of species A whereas species B contains a 10-carbon ring.

Explanation:

ATP Synthase is a protein complex that catalyzes the transfer of the protons down the gradient build by the action of the electron system in the mitochondria and makes ATP from ADP molecules.

The higher number of carbon in ATP synthase will require more protons to rotate to produce 3 ATP in this process so, if species A has more carbon present it will take more protons and able to produce only 83% of ATP compared to species B.

What are two characteristics of S waves?

Answers

Answer:

Speed 1

Explanation:

Sound wave can be described by five characteristics: Wavelength, Amplitude, Time-Period, Frequency and Velocity or Speed. 1.

The results of the Milgram experiment showed that:
O A. people would pick the wrong line even though they knew it was
wrong.
B. people would adopt assigned roles very quickly and without
question.
C. even though people were sometimes uncomfortable, they still
obeyed the authority figure.
D. people had no problem or concerns about obeying an authority
figure.

Answers

Answer: c

Explanation:

ap*x

The Milgram experiment revealed that participants obeyed even when they are feeling uncomfortable. The correct option is C.

What is Milgram experiment?

Milgram explains the psychology of genocide and answers the popular contemporary question.

Based on this experiment, the behavior showed up by the people is they even uncomfortable, still they obeyed the authority person.

The correct option is C.

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Which of the following is a likely effect of the tornado on the plains ecosystem?

Answers

Answer:

Flying debris could harm a population of bison

5. Which of the following statements is true about natural systems?

Answers

Answer:

im sorry i dont see and question or anwsers to help maybe tryb reposting

Explanation:

Answer:

B. Producers are at the bottom level of both the energy pyramid and the biomass pyramid.

Explanation:

 Both the biomass pyramid and the energy pyramid have producers at the bottom.

Producers account for most of the biomass and most of the available energy in any  given ecosystem.

Is this correct? If not plz help!

Answers

no

it should be ty Ty yt tY
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