4. What is harder for the astronomer to measure: A galaxy's redshift (indicating recessional velocity) or its distance from Earth? Why? Explain your answer.

Answers

Answer 1

Answer:

Its distance from the Earth

Explanation:

Its distance from the Earth is more difficult to measure because to measure it we need the redshift anyways, or we can get a rough estimate by its brightness. To measure the redshift we just need its wavelength and some calculations.

Answer 2

Answer:

its distance from earth is harder


Related Questions

What is absorption?
A. getting rid of the parts of the food that the body couldn't
use
B. absorbing nutrients into the blood stream from the food
that was eaten
C. the breaking down of the food that has entered the body
D. putting food and drinks into your body

Answers

Answer:

option(B)

Explanation:

Absorbing nutrients into the blood stream from the food  that was eaten is called absorption.

Vaccines contains
1 point
the antigen of a pathogen
the antibody of a pathogen
the DNA of a pathogen
the DNA of human cells

Answers

Answer:

the antigen of a pathogen

Name TWO disorders that may occur within this body system and discuss cause/diagnosis/treatment.

Help plz

Answers

Answer:

heart attack and organ failure

Explanation:

the water is..........​

Answers

Answer:

The water is chemical compound.

Define DNA and explain the role it plays in cells and in sexual and asexual reproduction.

Answers

Answer:

it is aself replicating materialsthat is present in nearly materials for all living organisms as the main constituents of chromosome

I’m sorry but you can’t get me mad confused when you

Suppose you run three different paths from A to B. Along which path(s) would your distance traveled be different from your displacement

Answers

The distance is the measurement all around the path whereas displacement is the measurement of how far apart objects/ points are.
Hope this helps, please give me brainliest:)

what things make profession of different level​

Answers

Answer:Alchemy. The best companion for this profession is Herbalism, as early alchemy relies almost exclusively on herbs for the potion... THEIR ARE DIFFERENT KIND OF LEVELS ALSO AND THEY ARE AS FOLLOWS:

Entry-level.

Intermediate.

Mid-level.

Senior or executive-level.

MAY IT'S HELPFUL FOR U MATE

the root is long and branching. how does this help the cactus plant to survive?​

Answers

Answer:

by asborbing water from deep ground

It helps the cactus absorb water before it dries up since it's a desert plant

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b. Larva of a silkworm and larva of a bee ​

Answers

Answer :

Silk worm larvae is used in extracting silk and thus help in making clothes. Bee larvae is used in pest control. The majority of honey bee larvae eat honey, but larvae that are chosen to become future queens will be fed with royal jelly.

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If eukaryotes all came about due to endosymbiosis, what would result from that?

Answers

your question isnt clear. but endosymbiosis means earlier bigger prokaryotes engulfed prokaryotes that carried out aerobic respiration(later became mitochondria) and other prokaryotes that carried out photosynthesis(later became chloroplasts). these “now” mitochondria and chloroplasts “realised” that they couldnt survive without the bigger prokaryotes that engulfed them hence they remained part of the larger prokaryotes. hope that explains it.

Endosymbiosis occurs when larger prokaryotes envelop prokaryotes that perform aerobic metabolism (later known as mitochondria) and prokaryotic cells that do photosynthesis.

These "now" mitochondrion's "came to realise" that they really can not live without the bigger prokaryotes that swallowed them, and therefore they stayed with them. 

Learn more:

https://brainly.com/question/15829977?referrer=searchResults

Identify a global challenge

Answers

Answer:

electrical waste management and deforestation

Which of the groups below has suffered the greatest percentage of species extinctions since 1600 (A) birds, (B) fishes, (C) mammals, (D) reptiles

Answers

(a) Birds is the correct ans

Explanation:

.......

Answer:

My guess would be mammals

Explanation:

Habitat destruction

The___ cycle is not a nutrient cycle

Answers

Answer:

use

Explanation:

If you like my answer than please mark me brainliest thanks

write parasitic adaption of flat worm​

Answers

Answer:

Parasitic flatworms protect themselves from the host's digestive liquids by developing teguments or resistant coverings around their bodies. They secrete anti enzymes to neutralize the digestive juices of host which are produced in intestine where flatworm lives.

identiying Parts of Spheres Use the drop-down menus to identify the spheres to which each part belongs.

A lake is part of the ___

Water vapor in the air is part of the___

Glacier and iceburgs are part of the___

The rocky mountains are part of the___

A deer is part of the____​

Answers

Answer:

Answer is

A lake is part of the hydrosphere.

Water vapor in the air is part of the atmosphere.

Glacier and icebergs are part of the cryosphere.

The Rocky Mountains are part of the geosphere.

A deer is part of the biosphere.

Please help! Show work please!

Answers

Answer:

7. 18m = 1800 cm = 18×10² cm

8. 23 dm = 0.23 hm

9. 5 cm = 50 mm

10. 5.3 hL = 530000 mL

11. 167 mm = 0.167 m

12. 1.589 daL = 158.9 dL

13. 35.45 mg = 0.0003545 hg

14. 43 dam = 4300 dm

15. 500 kg = 500000 g

16. 700mL = 0.0007 KL

17. 130 dag = 1.3 kg

18. 59.932 mm = 59.932 × 10 –⁵ km = 59.932 × 10^–5 km

* Note; 1 m —> 100 cm1 dm —> 0.001 hm1 cm —> 10 mm1 hL —> 100000 mL = 10⁵ mL1mm —> 0.001 m1 dal —> 100 dL1 mg —> 0.00001 hg = 10^–5 hg1 dam—> 100 dm1 kg —> 1000 g1 mL —> 0.000001 kL = 10^–61 dag —> 0.01 kg1 mm —> 0.00001 km = 10^–5 km

I hope I helped you^_^

How are photosynthesis and cellular respiration related?

A. The equations for photosynthesis and cellular respiration are opposites of each other
B. Photosynthesis provides the energy for cellular respiration
C. Both processes take place in mitochondria
D. Only plants perform photosynthesis, and only animals perform cellular respiration

Answers

Answer:

I think it is B. Photosynthesis provides the energy for cellular respiration

If it isn't I'm super sorry!

Explanation:

Which of the following organelle pairs could ONLY be in a plant?
A. Ribosomes and nucleus
B. Nucleus and chloroplasts
C. Cytoplasm and cell membrane
D. Nucleus and mitochondria

Answers

Answer:

A

Explanation:

because it Only present plant

Answer:

A

Explanation:

because it only present in plants

11. Sensory receptors throughout the body monitor stimuli and communicate with the central nervous system to allow you to respc
in your environment or internal conditions. What component of feedback loops do sensory receptors fulfill?
O A. Controller
B. Hormones
C. Sensor
D. Effector

Answers

Answer:hormones

Explanation:

Answer:

C. Sensor

Explanation:

  According to https://open.oregonstate.education/aandp/chapter/13-1-sensory-receptors/

   -   "A major role of sensory receptors is to help us learn about the environment around us, or about the state of our internal environment. Different types of stimuli from varying sources are received and changed into the electrochemical signals of the nervous system. This process is called sensory transduction."

Hope this Helps :)

When many nucleotides link together, they form a biomolecule responsible for storing genetic information called a
Group of answer choices

protein.

nucleic acid.

retinal.

carbohydrate.

Answers

Nucleic acid, just know nucleic acid is made up of nucleotides

When many nucleotides link together, they form a biomolecule responsible for storing genetic information called nucleic acids. Thus, the correct option is B.

What are Nucleotides?

Nucleotides may be defined as the basic unit of the polynucleotide chain of nucleic acids such as DNA or RNA. Each nucleotide is composed of three components. They are as follows:

A nitrogenous base.A pentose sugar (ribose in the case of RNA, and deoxyribose in the case of DNA).A phosphate group.

Nucleotides are the monomers of nucleic acids. Each nucleotide is joined together by covalent bonds known as phosphodiester linkage. This linkage is present between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar of next nucleotide.

Therefore, nucleic acids are formed when many nucleotides link together which are responsible for storing the genetic information.

To learn more about Nucleotides, refer to the link:

https://brainly.com/question/10874360

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Determine whether the statement is true or false, and why. "Bacteria
reproduce sexually through plasmids and increase genetic diversity through
Binary Fission"
A. False, "Bacteria reproduce sexually through Binary Fission and increase genetic
diversity through Plasmids."
o
B. False, "Bacteria reproduce asexually through plasmids and increase genetic diversity
through Binary Fission."
C. False, "Bacteria reproduce asexually through Binary Fission and increase genetic
diversity through plasmids."
D. True

Answers

Answer:

A.

please let me know how helpful is it

calculate the area of the following rectangular box.​

Answers

Explanation:

here is your answer hope it helps you..

What differences do insects and arachnids have?

Answers

Answer:

The main difference between the two is that arachnids have eight legs (four pairs of legs) while insects have six (three pairs of legs).Another clear difference is that arachnids don't have antennae or wings all insects, though, have antennae, and also have wings

Explanation:

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what can be done to modify a nerve cell to function most efficiently​

Answers

Answer:

Explanation:

Axons, the long, cable-like projections on neurons, are made stronger by a unique modification of the common molecular building block of the cell skeleton. ... They also support transport of molecules within the cell and facilitate growth. They are made up of polymers of a building-block substance called tubulin.

what type of energy transfer happens when something freezes

Answers

Alternate interior angles is the chemical answer


3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web

Answers

Answer:

B- A food chain

Explanation:

This answer has been confirmed as correct and helpful

Genetic variation is more commonly found in sexually reproducing organisms, as compared to asexually reproducing organisms, because
1 point
in asexual reproduction gametes fuse to lead to new genetic combinations
in sexual reproduction the gametes formed are all genetically identical
in asexual reproduction the gametes formed are genetically different
in sexual reproduction gametes fuse to lead to new genetic combinations

Answers

Answer:

In sexual reproduction gametes fuse to lead to new genetic combinations

Explanation:

In sexually reproducing organisms, there are two parents who create genetically diverse offspring.

This occurs because the gametes of the two parents combine to create very unique genetic combinations, which lead to increased genetic variation.

On the other hand, asexually reproducing organisms reproduce without a partner.

Their offspring are identical clones to the parent, so they have much less genetic variation.

So, the correct answer is that In sexual reproduction gametes fuse to lead to new genetic combinations.

what modification do we find in the steam and petiole of the aquatic plants​

Answers

Answer:

Explanation:

Modification  Definition  Example

1) Tendrils The leaves are modified into slender wiry and

coiled structures called leaf tendrils and support climbers to climb  Pisum Sativum

2) Spines The leaves modified into a pointed structure and usually protect them from herbivores.  Opuntia

3) Phyllode It is a green extended structure formed by the modification of petiole or rachis of leaf that carries out photosynthesis.  Acacia

4) Storage leaves Leaves become fleshy due to storage of water and food material.  Aloe

5) Cotyledons The mature embryo shows either one or two cotyledons.  Angiosperms and gymnosperms

6) Leaf bladders Some of the leaves of aquatic plants modified into leaf bladders to trap small insects.  Utricularia

7) Leaf Pitcher Lamina of the whole leaf is modified into a lid known as a pitcher which traps insects to fulfil the need of nitrogen.  Nepenthes

A particular pea plant has one allele for a tall stem (T) and one allele for a short stem (t). By observing it, you can see that it has a tall stem as well as many other different traits. Using this example, explain the difference between phenotype and genotype. Which one can be observed? Which one helps to determine the other?

Answers

Answer:

phenotype is the physical make up of an organism. it is controlled by alleles found in the cells of an organism. dominant alleles overshadow the recessive alleles. the allele for tallness for example, is dominant to that for shortness. since alleles occur in pairs, this plant which is tall can either be genotype TT or Tt , two dominant alleles or one dominant allele and the recessive allele which overpowers the recessive allele hence making the plant appear tall. genotype is the genetic make up of an organism. this determines how an organism appears to look externally.

hence genotype determines phenotype.

What Creates local winds ?

A. As hot air sinks and cold air rises winds are formed

B. As cold air sinks and hot air rises winds are formed

C. As Precipitation falls winds are formed

Answers

Answer:

B

Explanation:

hot air rises because it is less dense and cold air sinks because it is more dense. for example if he had a balloon and it was in the freezer it would shrink however if you were to leave it out for a little while it would expand.

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