what is the difference between redshift and blueshift?

Answers

Answer 1

Answer:

Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. The concept is key to charting the universe's expansion. Visible light is a spectrum of colors, which is clear to anyone who has looked at a rainbow.

Explanation:


Related Questions

What keeps cells from growing indefinitely?

Answers

Answer:

Apoptosis

Explanation:

Apoptosis is a process that some cells go through when their embryo divides. It is programmed cell death. Apoptosis can help protect organisms from developing cancerous growths, or the uncontrolled growth/division of cells.

Well Cells are limited in size because the outside (the cell membrane) must transport the food and oxygen to the parts inside. As a cell gets bigger, the outside is unable to keep up with the inside, because the inside grows a faster rate than the outside.

HELLLLPPPPPPPP Which statements describe asexual reproduction? Check all that apply

results in offspring with different DNA than parent
results in offspring with the same DNA as parent
requires only one parent to produce offspring
requires two parents to produce offspring
includes cell divisions that are similar to the cell divisions in meiosis
includes cell divisions that are similar to the cell divisions in mitosis

Answers

Answer: the second one, the third one, and the last one.

Explanation:

Answer:

Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.

Explanation:

What does sexual reproduction result in with genetics?

Answers

Answer: sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other.

Identify the structures on the right.
Label A
Label B
Label C
Label D

Answers

A- DNA
B- Histone
C- Chromosome
D- Nucleus :)

Answer:

correct

Explanation:

Answer above is correct

lol pls help i really need help

Answers

c would be missing. because when secondary succession occurs, it was previously occupied and re-colonized. im almost positive because i kind of remember doing this a few weeks ago. hope this helps a bit!

Joan saw a mushroom growing on the stump of a dead tree. What would Joan infer about the role of the mushroom

Answers

The mushroom is a decomposer. So, since the tree is dead, the mushroom is working on decomposing it.

what is a primary role of decomposers in ecosystem​

Answers

Answer:

to decompose organic matter

Explanation:

Answer:

Decomposers feed on dead things: dead plant materials such as leaf litter and wood, animal carcasses, and feces. They perform a valuable service as Earth's cleanup crew. Without decomposers, dead leaves, dead insects, and dead animals would pile up everywhere.

A person who believes that people are who they are because of how they are raised is more on the side of ___ with respect to the nature versus nurture debate.
A. biology
B. nature
C. innate traits
D. nurture

Answers

Answer:nurture

Explanation:

Its nurture because nature is ur surrounding and nurture is how u r raised

Answer:

D.

Explanation:

Nurture

WILL MARK BRAINLIEST
The characteristics of two layers of Earth’s crust are listed. Layer A: Consists of the lithosphere Layer B: All living things live on this layer Which statement is true?

Layer A is the crust and Layer B is the mantle.
Layer A is the mantle and Layer B is the crust.
Layer A is the outer core and Layer B is the inner core.
Layer A is the inner core and Layer B is the outer core.

Answers

Answer:

layer a

Explanation:

Layer A is the mantle and Layer B is the crust.

why is dowry system a social problem​

Answers

women and girls in India and other nearby countries where dowry is still prevalent. Dowry can put great financial burden on low income families. Often times, instead of being a gift, it more of a demand from bridegroom's family.

Dowry system can also lead to many unwanted situations

Answer:

Dowry system is one of the contributing factors toward social problems that effects women and girls in India and other nearby countries where dowry is still prevalent.  But however, families with low income or under the poverty line, dowry is a huge problem. Dowry can put great financial burden on low income families.

is oxygen biotic or abiotic

Answers

Answer:

abiotic

Explanation:

abiotic because it is not an alive factor in our ecosystem

When the genetic material found within an offspring is diverse, what type of reproduction is responsible?

a
Sexual reproduction, because the genetic material comes from both parents
b
Sexual reproduction, because the genetic material comes from one parent
c
Asexual reproduction, because the genetic material comes from both parents
d
Asexual reproduction, because the genetic material comes from one parent

Answers

Answer:

a

Explanation:

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Which molecule is directly involved in the exchange of energy in both photosynthesis and cell
respiration?

Answers

Answer:

glucose

Photosynthesis makes the glucose that is used in cellular respiration to make ATP.

Explanation:

the prosses of a cell dividing into 2 new daughter cells is called?​

Answers

it’s called mitosis

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP IM DEAD IM FAILING
Explain how an uncontrolled mutation in a single cell can lead to the development of a tumor and cancer

Answers

Answer:

.........................

Explanation:

Eventually, the pace of the cell cycle speeds up as the effectiveness of the control and repair mechanisms decreases. Uncontrolled growth of the mutated cells outpaces the growth of normal cells in the area, and a tumor can result.

How does the idea of atoms
explain the principle of conservation of
matter?

Answers

Answer:

Both the initial and final substances are composed of atoms because all matter is composed of atoms.

write a five sentence paragrgh explaining the cell cycle

Answers

Answer:

The cell cycle is a cycle of stages that cells pass through to allow them to divide and produce new cells. It is sometimes referred to as the “cell division cycle” for that reason.

New cells are born through the division of their “parent” cell, producing two “daughter” cells from one single “parent” cell.

Daughter cells start life small, containing only half of the parent cell’s cytoplasm and only one copy of the DNA that is the cell’s “blueprint” or “source code” for survival. In order to divide and produce “daughter cells” of their own, the newborn cells must grow and produce more copies of vital cellular machinery – including their DNA.

The two main parts of the cell cycle are mitosis and interphase.

Mitosis is the phase of cell division, during which a “parent cell” divides to create two “daughter cells.”

The longest part of the cell cycle is called “interphase” – the phase of growth and DNA replication between mitotic cell divisions.

Both mitosis and interphase are divided into smaller sub-phases which need to be executed in order for cell division, growth, and development to proceed smoothly. Here we will focus on interphase, as the phases of mitosis have been covered in our “Mitosis” article.

Interphase consists of at least three distinct stages during which the cell grows, produces new organelles, replicates its DNA, and finally divides.

Explanation:

from online, rephrase this use as reference

What happens to an atom decays?

Answers

Answer:

If it decays by alpha decay, it will become an atom with 2 fewer protons and 2 fewer neutrons than the original atom. If the atom decays by beta minus (electron) decay, it will become an atom with one less neutron and one more proton than the original atom.

Explanation:

Brainliest Please!

All animals must be able to take in information and react to their environmental conditions. Describe the organs and organ systems in humans that work together to collect information about the external environment.

Answers

Answer:

Nervous system

Explanation:

The nervous system in humans work together to collect information about the external environment because they consist of the brain, spinal cords and neurons. They collect information from external environment and those information travels through neurons from sense organs like eyes, ears, skin e.t.c as a form of electrical impulses. When they get to the end of the neuron, a chemical called neurotransmitters are released which travels across the cells and send it to the brain, the brain then process it and interprete the signals and respond to it as stimulus.

All animals must be able to take in information and react to their environmental conditions through the Nervous system.

What are the 4 main functions of the nervous system?

Control of the body's internal environment to maintain 'homeostasis'.Programming of spinal cord reflexes.  Memory and learning.Voluntary control of movement.

Thus, the nervous system is the answer.

To learn more about the nervous system click here:

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Does anyone have the answers for the AP Biology final on edge?

Answers

No, I do not, But good luck on the AP Biology Final. Happy Holidays! :)

please help im stuck on this its science

Answers

Answer:

Conduction is the word you need

Explanation:

condaction or convection

Which temperature air would have the lowest pressure?
100 degrees F
75 degrees F
50 degrees F
35 degrees F ?

Answers

Answer:

35

Explanation:

it can be 35 I'm 90% sure

Gestational diabetes occurs when a pregnant woman has high levels of blood sugar. Cells in the pancreas usually keep blood sugar levels normal, but hormones produced during pregnancy deactivate the cells. After pregnancy, hormone levels return to normal, and so do the pancreas cells. Is this an example of DNA or the environment controlling gene expression? Explain your answer

Answers

Answer:

environment controlling gene expression  

Explanation:

Gestational diabetes generally occurs in pregnant women. The sugar level in the bloodstream becomes little high than the normal range during pregnancy. But the glucose level returns to normal after child birth.

The pancreas secrets insulin which helps to lower the blood sugar level in the body. But during pregnancy, the placenta releases some of the hormones which dilutes the effect of insulin. This is known as insulin resistance. So now the pancreas secretes more of insulin to overcome this insulin resistance for the body. Now if a woman during pregnancy does secrete more insulin, the glucose level increases in the body and the woman develops gestational diabetes.

Gestational diabetes greatly depends upon obesity and the ethnicity of the women, but a definite genetic link has not been identified.

This it is a result of the environment control gene expression.

We have heard that we are a product of our DNA. Specific genes in the
chromosomes we inherit from our parents help determine the traits we
inherit. Using the illustration identify the letters that represent the
three structures mentioned: DNA, chromosome, and gene

Answers

Answer:

A.) A.DNA; D.Chromosome; E.Gene

Explanation:

The human genome is made up of 23 pairs of chromosomes that are found in the cell's nucleus and one tiny chromosome that is found in the mitochondria. Everything a person needs to grow and operate is encoded in their genome.

What is the genome organization in cell?

The single linear bits of DNA that make up genomic DNA are connected to a protein called a nucleoprotein complex.

Chromosomes are made of a DNA-protein complex, and the 23 chromosomes found in the cellular nucleus are where almost all the genomic DNA is dispersed.

A genomic organization is the division of DNA molecules into chromosomes and their linear arrangement.

In addition to the three-dimensional structure of chromosomes, “genome organization” can also refer to the arrangement of DNA sequences inside the nucleus.

Therefore,  A.DNA; D. Chromosome; E. Gene

Learn more about genome organization here:

https://brainly.com/question/6137206

#SPJ2

Amino Acids contain which element? *
Nitrogen
Helium
Zinc
Sodium

Answers

it contains 4 key elements carbon, hydrogen, oxygen and Nitrogen. so your answer is nitrogen

Complete the following Punnett square, show the genotypes produced by the the offspring of an agouti x chinchilla cross, and an albino using the following alleles: A=agouti, C=chinchilla, a=albino, A is dominant over C and a, C is dominant over a. Assume the agouti rabbit is female. Place your answers in their correct spots on the grid. Hint: complete the agouti with chinchilla cross first.

Answers

Answer:

Now there we go! That's the complete question. But anyway, here's your answer:

     C       C

A   AC    AC

A   AC    AC

Basically, what this Punnett Square means is that all of the offsprings will be Agouti, due to Agouti being the dominant trait. However, the genotype of the offsprings will be heterozygous since all offsprings also carry the allele C as well.

Explanation:

Hope this helped!

Answer:

     A   A

C  AC  AC

C  AC  AC

In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the
bigger fish.
Using the above scenario, which of these would have the largest amount of available
energy?

A. Grass
B. Grasshopper
C. Snake
D. Owl

Answers

Grass I think - it’s been a while since I took that class

Are Cnidarians a Representative organism?

Answers

Answer:

No

Explanation:

Cnidarians refer to organisms found in the phylum Cnidaria/coelenterata. They're metazoans.. A representative organism of this phylum is hydra

Blank 1) one parent
two parents
multiple parents

Blank 2) Similar
Different
Identical

Blank 3) Sexual
Asexual

Answers

1) one parent
2). Identical
3) asexual

X QUESTION 15
The diagram of the female reproductive system shows where different methods of birth control
can be used.
Where would an IUD be placed?
B
A А
С​

Answers

Answer:

If it looks like a "T" shape it is placed in the uterus, But if it is shaped like a pin it is placed in the arm.

Explanation:

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