The andromeda galaxy is located approximately 2.5 million light- years from earth. Why is the light that reaches earth 2.5 million years old?

Answers

Answer 1
So, the Sun's light takes about 8.3 minutes to reach us. This means that we always see the Sun as it was about 8.3 minutes ago. ... The nearest large galaxy to us, Andromeda, is 2.5 million light-years away. So, we see Andromeda as it was 2.5 million years in the past.

Related Questions

Which codon is the code for the amino acid histidine? (His)

Answers

Answer: B) CAU

Explanation:

I just did the test ;)

During a chemical reaction, increasing the temperature often
OA increases the rate of chemical change.
ОВ.
decreases the rate of chemical change
OC.
reverses the direction of chemical change.
OD. prevents a chemical change from occurring.

Answers

Answer:

A increases the rate of chemical change.

Explanation:

Elements undergo chemical bonding-where electrons are shared, and rearranged to form various molecules and compounds. Bond formation in chemical reactions have specific requirements for molecular configurations and energy.

Molecules usually collide at random til conditions are favorable for bonding.  Chemical change or reactions occur at faster rates at higher temperatures. Heating molecules increases their collision frequency and makes it more possible for the correct molecular orientation (for breaking and forming bonds) and energy to react are present.

Cell membrane questions
Please help will give brainlist

Answers

Answer:

IM DEAD BUT ALIVE BUT IM DEAD

Explanation:

Answer:

false

true

false

true

false

true

false

true

false

true

what is the molar mass of MgF2?

A.24.3g
B.19.0g
C43.3g
D.62.3g​

Answers

Answer:

62.3018 g

Explanation:

I also had this question on my quiz

If our pupil is just a hole how does it go small and big when your thinking of something...

Answers

Answer:

This is controlled by muscles in the iris which will constrict or enlarge the pupil.

Explanation:

Which statement best describes cancer cells?
They grow as a single layer of cells.
They cease to reproduce after 20–50 mitotic divisions.
They reproduce only when needed to replace missing cells.
They are not regulated by contact inhibition.

Answers

Answer: They are not regulated by contact inhibition.

Explanation:

Contact inhibition is a form of controlling cells. Cancer doesn't have contact inhibition, which is one of the reasons why it spirals out of place so easily.

Answer:

They are Not regulated by contact inhibition.

Explanation:

The other 3 options are not characteristics of a cancer cell. Cancer cells have unlimited cell division, no anchorage dependent inhibition, no contact inhibition, and forms tumors - hence they don't form a single layer of cells.

EASY QUESTION! MARKING BRAINILEST! QUESTION IN PICTURE!

Answers

1) e 1

2) c 2

3) b 3

4) d 4

5) a 5

Answer:

1) e 1

2) c 2

3) b 3

4) d 4

5) a 5

Explanation:

How would the seasonal paths of the Sun change for a location that is more North of this latitude?

Answers

Answer:

At the North Pole, the sun is above the horizon for six straight months (March through September), spinning around in horizontal circles, reaching a maximum height of 23.5° above the horizon at the June solstice. As you travel southward in the northern hemisphere, the noon sun gets higher and higher.

Explanation:

Add the north pole the sun is above the horizontal for six straight months


Consider the solid phase of the substances listed in the chart. In which substance are the intermolecular forces strongest?
a. helium c. water
b. mercury d. aluminum

Answers

Answer:

it would be A helium I think

Explanation:

such fossil evidence supports which statement put forth by alfred wegener regarding the geologic history of earth

Answers

Answer:

Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.

Explanation:

Answer: C) The continents were once United into a single supercontinent named Pangea, which broke apart and the continents gradually moved their current positions. (USATestprep)

Explanation:

The “Explanation” is all in the answer, really. :)))

PLEASE ANSWER ASAPPP!!! WILL GIVE BRAINLIEST

Answers

Answer:

i would say  a

im sorry if im wrong also i dont need brainliest

The temperature of Mercury is not regulated and the atmosphere easily floats away while being
replaced with solar wind.
Mercury has a
atmosphere.

Answers

the temperature of mercury is not regulated and the atmosphere easily floats away while being replaced with solar wind .

Mercury has a thin atmosphere.

What element is found in liver and is needed to prevent anemia or “tired” blood?

Answers

Answer:

Iron (Fe)

Explanation:

Hello, I would love to ask you all a question . What solution will you get after sprouting onion in water?
Everyone pls answer.

Answers

Answer:

If you place a sprouted onion with the roots down in a glass of water, it will continue to grow on the top with new shoots. You can either cut off the top part and use it in recipes, or plant the whole onion, roots and all, in soil and watch it grow. All types of onions will regrow.

Which is a frameshift mutation? substitution nonsense silent deletion

Answers

Answer:

deletion!

Explanation:

edge 2020

Deletion mutation is an example of frame-shift mutation.

FRAME-SHIFT MUTATION:

Frame-shift mutation is a type of mutation in which the reading frame of a DNA (nucleotide) sequence is altered.

DNA or RNA is made up of nucleotides subunits, which is read in a particular pattern. When this reading pattern is shifted, frame-shift mutation is said to occur.

Deletion mutation and insertion mutation are the two kinds of mutation that results into frame-shift mutation.

Learn more about frame-shift mutation at: https://brainly.com/question/347745

What characteristics are used to categorized stars?

Answers

Answer:

Characteristics used to classify stars include color, temperature, size, composition, and brightness.

what do plants use nutrients for?

Answers

Answer:

they help create new cells

The ________ is the fluid component of blood.

Answers

Explanation:

Hey there!

The answer would be Plasma.

Reason: Plasma is composed of more than 90% of water in it. And rest are other materials like proteins, hormones, etc.

Hope it helps....

Answer:

plasma

Explanation:

The structures responsible for completing the breakdown of carbohydrates into usable energy for the cell are the

A. Nuclei
B. Mitochondria
C. Ribosomes
D.chloroplasts

Answers

Answer:

The correct option is;

B. Mitochondria

Explanation:

The mitochondria are the organelle of the cell bund to the membrane that are referred to as the cell powerhouse they function in the same manner as the digestive system, such that they take in raw nutrients which are broken down to produce energy containing molecules which makes up the majority of the chemical energy required for the various biochemical reactions of the cell in a way such that the energy they produce are stored in adenosine triphosphate (ATP) molecules.

Answer:

B. Mitochondria

Explanation:

The mitochondria are cellular organelles found in eukaryotic cells. They are structures involved in cellular respiration, which is the process whereby energy in form of ATP is synthesized for use by the cell.

Cellular respiration in eukaryotes occurs in stages including glycolysis, kreb's cycle and oxidative phosphorylation. All these processes combine to breakdown carbohydrates (glucose) into usable energy for the cell. The structures responsible for this process is MITOCHONDRIA.

Which of these represents transfer of heat through conduction when a fireplace is lit in a room?

Hot air rises through the chimney.
Cool air is drawn in from the sides.
A spade placed in the fire turns hot.
A person sitting nearby feels the hea

Answers

Answer:

A spade placed in the fire turns hot.

Explanation:

how steroids affect skeletal system and muscular system.
(5 sentences for each system)

Answers

Answer: Many drugs can affect muscular control and skeletal strength. Steroid use during childhood or adolescence, resulting in artificially high sex hormone levels, can signal the bones to stop growing earlier than they normally would, leading to short stature. PCP can cause a user to have severe muscle contractions.

Explanation:

All the members of one species that live in the same geographic area make up a

Answers

Answer:

population

Explanation:

Which base sequence is complementary to this strand of DNA?

Answers

Answer:

I believe the answer is D

Why is the world's loss of biodiversity a source of concern?

O a. Humans depend upon other organisms for food and oxygen

b. Species have value to humans, both monetary and because we like them

c. Tourism depends on the preservation of certain animal species

d. Both (a) and (b)

Answers

Answer:

a) Humans depend upon other organisms for food and oxygen

Explanation:

Biodiversity refers to the richness in the species of organisms on Earth i.e the variety of biological organisms on the Earth. The importance of biodiversity cannot be overemphasized because of our dependence on the sustainability of biodiversity in our ecosystems.

The loss of biodiversity, which is becoming rampant by the day, is a major concern to us because we humans depend upon other organisms for food and oxygen. Humans are strictly heterotrophic and hence are reliant on variety of organisms for food. Plants also release oxygen gas via their photosynthetic process, which is key to our survival as a population.

The study of the environment is called ecology.

The correct answer is A.

The loss of animals and plants in the ecosystem is called loss of biodiversity. These reasons for the loss is as follows:-

Overexploitation.Invasion of alien speciesGreedHabitat loss

The loss of these species has a high impact on the ecosystem as these have an important function to form forests.

All the species are dependent on each other.

Hence, the correct option is A that is humans depend upon other organisms for food and oxygen

For more information, refer to the link:-

https://brainly.com/question/12985618

Which value is a good estimate of the railroad’s average elevation?

Answers

450........................

Please can someone help me with this!????

Answers

Answer:

Darker colors absorb heat so the darker fur color on the extremities would help in keeping the rabbits warm.

Which option describes a similarity between scientific laws and scientific theories? 1.Both can change in light of new evidence. 2.Both explain how a phenomenon works. 3.Both are purely observations of nature. 4.Both are suggested explanations that are starting points.

Answers

Answer:

1.Both can change in light of new evidence

2.Both explain how a phenomenon works

Explanation:

Law and theory can be defined to be part of the nature of scientific knowledge. A scientific theory is a well-established explanation for observations of the natural world which can be verified by applying the scientific method, while a scientific law is a statement obtained from repeated experimental and/or observational procedures to describe and/or predict natural phenomena. Scientific theories can change when researchers discover new lines of evidence, while scientific laws also change based on new empirical evidence.

Need hlp pls thanks

if u give good answer i will make u brainly answer

Answers

Answer:

the answer is option D

Explanation:

if your poop is green, is that a good thing or a bad thing.

Answers

Answer:

All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool.

Answer:

You will be fine I hope. :) It just says you have been eating green foods.

Explanation:

what is the function of Queen Bee?​

Answers

Explanation:

HONEY BEE QUEEN'S ROLE IN THE COLONY

The Queen Bee plays a vital role in the hive because she is the only female with fully developed ovaries. The queen's two primary purposes are to produce chemical scents that help regulate the unity of the colony and to lay lots of eggs.

Answer:

the function of queen bee are

1. to lay's egg

2. queen fed with royal jelly

Explanation:

Other Questions
For each of the different reading purposes, choose whether a memoir or a diary is more likely to provide the information.describing how it felt to be in hidingexplaining what happened after the warlearning how people in the annex felt about Miepunderstanding what people did to save Anne and her family after they'd been arrested. Exercising too much can cause ____.a.feverc.tendonitisb.osteoporosisd.none of the above What type of weathering causes mineral. composition of rocks to change?A:chemical weathering B:General weatheringC:Mechanical weatheringD:Permeable weathering Pleaseeee help im confused best answer will get brainliest. Arange suits a large volume of food production and can becombined with other ranges using a battery.O DeckO RackRestaurantHeavy-dutyWill give 15 points and brainliest for correct answer!! Which career is best described by someone who buys materials, products, and services for an organization?O Wholesale BuyerO Marking ClerkO Purchasing AgentO Stock Clerk Find the mass of AlCl3 that is produced when 3.58 moles of Al2O3 react with excess HCl according to the following equation. what deterilnines whether or not an atom is boron In the process of transcription, how does the mRNA strand relate to DNA?a) The mRNA strand is complementary to the DNA strand; however, uracil instead of adenine is paired with thymine. b) The mRNA strand is complementary to the DNA strand; however, uracil instead of thymine is paired with adenine. c) The mRNA strand mimics the DNA strand; however, uracil is the 5th based used in the sequence. d) The mRNA strand is an exact copy of the DNA strand. AHHHH I CAN'T DO THIS Read the text carefully, then answer the question located beneath:Time to "Bee" Wary, by Gordon WintersAfricanized honey bees were created in Brazil in 1957. Scientists mixed local bees with African ones to create a bee that would make more honey. They ended up with something much different. The new bees evolved in unexpected ways. They multiplied and migrated north. These Africanized honeybees are now known as killer bees for several scary but legitimate reasons.Killer bees are far more aggressive than their relatives. They have been known to attack in great numbers, even when there has been no direct threat on their hives. They have swarmed because of loud noises, dark clothing, bright jewelry, and even strong perfume. They will chase a person for more than a quarter of a mile and remain angered for up to 24 hours.Killer bees are also dangerous because of their sting. While most bees take up to 30 seconds to attack, killer bees sting in just 3 seconds. Their venom is no stronger than a regular bee's, but when one killer bee stings, others follow. With up to 80,000 members in a colony, victims are quickly overwhelmed. So many stings in such a short time can cause allergic reactions. Victims enter a state of shock, lose blood pressure, and in many cases, die.A final reason why "killer" has been added to their name is the unfortunate number of deaths they have caused. Experts estimate that the Africanized honeybee moves at a rate of about 200 miles each year. As the bees claim new territory, they claim new victims as well. More than 1000 people have been stung to death in South and Central America. There have been rising numbers of attacks in Mexico and a handful in the United States. Once a swarm sets sights on a victim, it is very difficult for the victim to escape. Once attacked, it is very difficult to survive.Thankfully, there has been no killer bee invasion as some once predicted. Although there is no need for panic, the threat of the killer bee is real and should be taken seriously. It is good practice to call a professional to remove beehives in your area. If you are stung multiple times by any insect, you should always seek medical attention. You may not be expert enough to tell the difference between a killer bee and a less dangerous one, so be smart. It is better to be safe than sorry.Which details relate to the main fact in the third paragraph? (5 points)A) Killer bees attack in great numbers. They swarm for many reasons. They chase people and stay angry for hours.B) Killer bees have very aggressive behavior. Their stings are very dangerous. They have caused many deaths.C) Killer bees sting in just three seconds. They sting in large numbers. They cause allergic reactions in their victims.D) Killer bees have been the cause of deaths in South and Central America. They've caused deaths in Mexico and the U.S. A train company moves people between Boston and Providence every day. They travel from city to city 7 times each day. The distance between the two cities is 48 miles. In February, there are 28 days. The company's budget allows for 15,000 total miles in February. Do you think the budget is reasonable? Explain. Hi can someone plz help me thank you why should adults eat foods rich in calcium Philip can make 125 baskets in 12 days, while Mon can make 132 baskets in 8 days. How many more baskets Philip can make than Mon? PLEASE HELP ME I WILL GIVE BRAINLIEST Whats the least common multiple (LCM) for each group of numbers? Determine theconstant ofproportionality. How did fossil records support the existence of a supercontinent? A. Similar fossils were found on different continents. B. Fossil records showed how old the continents were. C. Similar fossils provided evidence that a meteor hit Earth. D. Fossil records provided evidence that dinosaurs existed. Cells that are in active protein synthesis are filled with which of the following?A. vacuolesB. mitochondriaC. ribosomesD. smooth ER A controlled situation in which the researchermanipulates one variable to discover its effect onanother variable, while holding all other conditionsconstant is called an?A) ExperimentC) ObservationB) HypothesisD) Thesisplease answer i have a 60 average in this class