Why do scientists use light-year instead of Astronomical Units to measure the distances between stars?

Answers

Answer 1

Answer:

well AU is only for inside a star system and the number of AU would be too high, so light years are easier its like saying ur 6 feet instead of 72 inches or in centimeters

Explanation:


Related Questions

When does transformation occur

Answers

Answer:

Transformation results in the genetic alteration of the recipient cell. Exogenous DNA is taken up into the recipient cell from its surroundings through the cell membrane (s). Transformation occurs naturally in some species of bacteria, but it can also be affected by artificial means in other cells.

I hope it's helpful!

______ receptors detect changes in internal and external body conditions.

Sensory


Motor

Answers

Answer: Sensory Receptors

A group of scientists have created a new drug X that helps with anxiety.What is your hypothesis?

Answers

Answer:

Explanation:

it will help calm people that have anxietycan be used as a placebo effect

What is interkinesis??​

Answers

Answer:

Interkinesis or interphase II is a period of rest that cells of some species enter during meiosis between meiosis I and meiosis II. No DNA replication occurs during interkinesis; however, replication does occur during the interphase I stage of meiosis.

Explanation:

Hope it helps

A team of scientists is studying several plant species that they think could become new farm crops. The scientists want to apply selective breeding to
develop one of the species into useful crop plants.
Which property of a plant species would be MOST USEFUL for meeting the scientists' goal?
A. very low genetic variation
B. very high genetic variation
C. producing only a few fruits and seeds each growing season
D. growing slowly from seedlings to maturity

Answers

I think the answer is C

The study of the interactions between organisms and their interrelationships with the physical environment is known as

Answers

the answer is ecology

An individual with a personality disorder is usually too trustful of other people.


Please select the best answer from the choices provided

T
F

Answers

Answer:

answer is false

Explanation:

took the test!

Answer:

F

Explanation:

Took the test on Edge & got 100%!

The inside of a can has equal pressure to the outside of the can. If the pressure inside the can decreases and the
pressure outside the can increases, will the can explode, implode, or stay the same? Write your answer then draw
the final state of the can.

Answers

Implode - collapse or cause to collapse violently inward.

Knowing that some individuals from Island 1 colonized Island 2, biologists sample the Mainland and two Island populations fifty years after the colonization events. They determine that allele frequencies are similar on both islands, but they are significantly different than the frequencies of the mainland population. Which of the evolutionary mechanisms could be used to explain these observed

Answers

Answer:

The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In founder effect, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, genetic variability is reduced and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.  

In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time.

is scorpion are vertebrate or invertebrate​

Answers

Answer:

invertebrates

Explanation:

hope this helped:))))))))))))))

What does dna code for

Answers

Answer:

deoxyribonucleic acid.

Explanation:

DNA

Answer:

DNA is an abbreviation of deoxyribonucleic acid

Explanation:

DNA is a blend of Deoxyribose and Nucleic Acid.

I hope this helps.

If we have a DNA gene that reads: TACGCGTCAGGCCAA
The Transcribed mRNA would read?

Answers

Answer:

AUGCGCAGUCCGGUU

Explanation:

A - U

T - A

G - C

C - G

in the levels of organization of plants, what are the two tissues and their functions?

Answers

Not exactly sure what you are asking. However, there are two central tissues in plant cells: phloem and xylem. Phloem moves nutrients, air, and essential nutrients DOWN throughout the cells. Xylem transports water UP throughout the cell. Together, they allow photosynthesis to occur. Remember, water is separated during photosynthesis to allow the ETC (electron transport chain) to continue to flow. If the ETC flows, the organism can go. The oxygen is then released as a by-product. Sugar and nutrients such as nitrogen, then allow for the Light-Dependent Reaction to occur in the stroma. Hope this helps!

Choose all the answers that apply.
Our bodies exhale carbon dioxide (CO2). Carbon dioxide
is a compound
has two atoms of oxygen
is made of oxygen and carbon
s an element
has two molecules of oxygen
Please hurry need help!!!!!

Answers

Answer:

CO2 is a compound, it has 2 atoms of oxygen, and is made up of oxygen and carbon

Explanation:

Answer:

CO2 is a compound, it has 2 atoms of oxygen, and is made up of oxygen and carbon

Explanation:

What is meant by the term "density"? Please provide an example of how
density is determined in air masses.

Answers

Answer:

1) density "the degree of compactness of a substance."

2) air masses "More dense, or “heavier” air will slow down objects moving through it more because the object has to, in effect, shove aside more or heavier molecules. Such air resistance is called “drag,” which increases with air density."

Explanation:

BRAINLIEST? plz

How much of the earth's oxygen does algae produce?
One Quarter
One third
One fifth
One half

Answers

Answer:

One Third

Explanation:

". Algae produces one third of all the oxygen produced by photosynthesis on Earth. "

Answer:

One third

Explanation:

Hope this helps :)


If the results of your experiment do not support your hypothesis, you should
a. Publish your results anyway
b. Consider the results abnormal and continue working
c. Find a way to rationalize your results
d. Try another metho

Answers

I think D should be the answer

In 1998 paleoanthropologist Rick Potts of the Smithsonian institution published an article in the yearbook of physical anthropology a peer reviewed Journal the article was titled environmental hypotheses of hominin evolution in his paper pots provided evidence to support his claim that gray variations and environmental conditions over time or responsible for the attacks ability of humans and the success of our species why might this not be the best article to reference?

Answers

Answer:

Because the author of the article did not do an experiment to draw his own conclusions and issue his own information, but he did a bibliographic review of the work of other authors to write his own article.

Explanation:

The article presented in the question above was done through a bibliography search and not through an experiment. This means that the author did not test the hypotheses through a scientific experiment, but formulated the conclusions of his article, based on the works of other authors, which makes this article not the best option to be considered as a reference article.

what are two kinds of insomnia?

Answers

Answer:

Short-Term Insomnia and Chronic Insomnia.

Explanation:

Short-Term Insomnia is a brief episode of difficulty sleeping.

Chronic insomnia is a long-term pattern of difficulty sleeping.

Answer:

Short-Term Insomnia. Also known as acute insomnia or adjustment insomnia, this is a brief episode of difficulty sleeping. ...

Chronic Insomnia. Chronic insomnia is a long-term pattern of difficulty sleeping. ...

Other Ways of Describing Insomnia.

Explanation:

Question: Do you think School is necessary during a worldwide pandemic because it’s stressing kids mental health and focus. If so explain why it’s still necessary

Answers

it is necessary to keep learning, but it shouldn’t be nearly as intense as it is right now.

In poultry, two genes R and P, control the shape of the comb on the head. The following genotype/phenotype relationship applies to the two genes and the phenotype: R- P- animals have a 'walnut' comb, R- pp animals have a 'rose' comb, rr P- animals have a 'pea' comb, and rr pp animals have a 'single' comb. What will the comb phenotypes be for the progeny of the cross RR Pp x rr Pp

Answers

It’s the suck this left not pls

Answer:

sssssssssssszdawe

Explanation:

Which hypothesis is testable?
Plants that are grown by using brand A fertilizer taste best.
Plants that have flowers look prettier than plants that do not have flowers.
Plants will eventually die off if global warming trends continue.
Plants make more sugar on sunny days than on cloudy days.

Answers

Answer:

D.

Explanation:

Plants make more sugar on sunny days than on cloudy days.

Answer:Plants make more sugar on sunny days than on cloudy days.

Explanation:

d.

Which object has particles with the most kinetic energy

Answers

All particles have energy, and the energy varies depending on the temperature the sample of matter is in, which determines if the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.
All particles have energy, and the energy varies depending on the temperature the sample of matter is in, which determines if the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.

How do you think Homeostasis of an organism and cell transport are connected?

Answers

Answer:

no they are not connected

Answer:

Cell transport helps maintain homeostasis because it keeps the conditions in the typical ranges within all of the cells in the organism.

Explanation:

Question 4 of 20 :
Select the best answer for the question.
4. How do soils become overly saline?
O A. Salt from fertilizer accumulates in the soil
O B. Plains are flooded with seawater during large storms, which evaporates.
O C. Salts accumulate as water evaporates in poorly drained arid fields.
O D. As the climate warms, salts are deposited with acid rain.
O Mark for review (Will be highlighted on the review page)
<< Previous Question
Next Question >>

Answers

Answer:

C

Explanation:

When irrigation water containing significant salt content is used—without applying extra water to leach out the salts—accumulation of salts can create a saline soil.

The correct answer is C !

A _______ error occurs when sister chromatids fail to separate properly during meiosis.

Answers

nondisjunction happens

Explanation:

The loss of a single chromosome from a diploid genome is called monosomy while the gain of one chromosome is called trisomy

MULTIPLE CHOICE QUESTION
What is Descent with Modification?
Similarities in offspring due to having same parents
Differences in offspring due to random genetic
mutations or the recombination of parent's DNA.
Differences in offspring due to learned traits.

Answers

Difference in offspring due to random genetic mutation or the recombination of parents DNA is the correct answer

Describe how Mendel's two laws are illustrated by the movement of chromosomes in meiosis. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
a. metaphase I
b. anaphase I
c. in seperate gametes
d. meiosis II
e. in one gamete
f. law of Segregation
g. depend on
h. independent of
i. law of Independent Assortment
j. meiosis I
1. _____is illustrated by the behavior of two pairs of homologs during_____. The alignment of one homologous pair is_____the alignment of other pairs. 2. _____is illustrated in_____when homologs separate. Alternate alleles of a gene found on homologs segregate from each other and end up_____.

Answers

Answer:

1. law of Independent Assortment; metaphase I; independent of.

2. law of Segregation; meiosis I; in separate gametes.

Explanation:

Between 1856 and 1863, Gregor Mendel developed a series of mating experiments using pea plants, which enabled the discovery of some basic principles of inheritance. These principles/laws are stated as:

1) Law of segregation: this principle states that the inheritance pattern of phenotypic traits is characterized by the presence of a gene pair and each gamete carries only one allele for each gene pair so offspring inherit one gene variant (allele) from each parent  

2) Law of independent assortment: this principle states that the genes responsible for the inheritance pattern of different traits are independently sorted from one another and thereby different traits are independent one from another.

3) Law of dominance: this principle states that the dominant allele will always be expressed in heterozygous individuals (this law is only applicable in cases of complete dominance).

i)Which one of the following substances have sour test.a) acid b)base c) salt d) all of these​

Answers

Answer:

a) acid

Explanation:

Acid is a chemical substance that is capable of donating protons (H+) when in an aqueous solution. This property makes a substance an acid, although the ability to donate completely or partially distinguishes a strong and weak acid.

One of the characteristics of acids is their SOUR TASTE. This characteristic sour taste is attributed to the hydrogen concentrations present in acidic foods or substances e.g unripe fruits.

explain what would likely happen if there were no shrimp in the close ecosystem

Answers

Answer:

It greatly affect population of fish.

Explanation:

If there were no shrimp in the close ecosystem then many fishes die due to lack f food because shrimp is the food of many small and large fishes. They also play a great role in protection of fish's skin by eating parasite, bacteria and fungi present on their skin so it also act as scavengers so if these shrimps are not present many fishes die due to various diseases and the ecosystem would be disturb.

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Complete play the table by writing the location orientation size and type of image formed by the lenses below.Please help me guyss!! :( Write in the correct forms of the adjectives. Which of the following ordered pairs, when graphed on a standardcoordinate plane, is located in quadrant I? Ginger spins the spinner below and rolls the number cube. What is the probability that Ginger's spinner will land on 3 and she will roll a 4? Which was a free state?KentuckyTennesseeOhioMississippi 25+2-153=?Pls Help me Martha jogged 7.8 miles. Erica jogged 0.5 times as far. How dar did erica jog An object with a mass of 4.0 kg has a force of 12.0 newtons applied to it. What is the resultant acceleration of the object?Help me?? :( The middle one. Pls answer I need it for homework what is the value of x? 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Read the excerpt below and then answer the question that follows:The Book of DragonsChapter III The Deliverers of Their Country, an excerptBy E. NesbitIt all began with Effie's getting something in her eye. It hurt very much indeed, and it felt something like a red-hot spark-only it seemed to have legs as well, and wings like a fly. Effie rubbed and cried-not real crying, but the kind your eye does all by itself without your being miserable inside your mind-and then she went to her father to have the thing in her eye taken out. Effie's father was a doctor, so of course he knew how to take things out of eyes.When he had gotten the thing out, he said: "This is very curious." Effie had often got things in her eye before, and her father had always seemed to think it was natural-rather tiresome and naughty perhaps, but still natural. He had never before thought it curious.Effie stood holding her handkerchief to her eye, and said: "I don't believe it's out." 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That afternoon Towser was bitten in the garden by a dragon about the size of a rabbit, which he had tried to chase, and the next morning all the papers were full of the wonderful "winged lizards" that were appearing all over the country. The papers would not call them dragons, because, of course, no one believes in dragons nowadays-and at any rate the papers were not going to be so silly as to believe in fairy stories. At first there were only a few, but in a week or two the country was simply running alive with dragons of all sizes, and in the air you could sometimes see them as thick as a swarm of bees. They all looked alike except as to size. They were green with scales, and they had four legs and a long tail and great wings like bats' wings, only the wings were a pale, half-transparent yellow, like the gear-boxes on bicycles.Which describes the effect of having multiple incidents with the "specimens" in this section of the story? (5 points)Select one:a. 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