Echinoderms are a group of aquatic invertebrates, but they are only found in
water.



The
of an echinoderm is made of hardened plates, which make the animal feel bumpy.



The body of an echinoderm is arranged like the spokes on a wheel. This is called
symmetry.

Answers

Answer 1

Answer:

1.salt 2.endoskeleton 3.radial Explanation: just did it

Answer 2

Answer: person above is right :)))

Explanation:


Related Questions

Please help me, I really need help with this.

Answers

what do you need help with ?

Frameshift mutation are the result of what occurrence?​

Answers

Explanation:

A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation caused by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three. Due to the triplet nature of gene expression by codons, the insertion or deletion can change the reading frame (the grouping of the codons), resulting in a completely different translation from the original. The earlier in the sequence the deletion or insertion occurs, the more altered the protein. A frameshift mutation is not the same as a single-nucleotide polymorphism in which a nucleotide is replaced, rather than inserted or deleted. A frameshift mutation will in general cause the reading of the codons after the mutation to code for different amino acids. The frameshift mutation will also alter the first stop codon ("UAA", "UGA" or "UAG") encountered in the sequence. The polypeptide being created could be abnormally short or abnormally long, and will most likely not be functional.

Genetic information is stored and transmitted within.
A. nucleic acids.
B. proteins.
C. amino acids.
D. sugars.

Answers

Answer:

A. nucleic acids

Answer:

A. nucleic acids

Explanation:

Compare how natural selection selects for organisms with beneficial traits over those with less beneficial traits for an environment.

Answers

so natural selection is the worlds way of saying “you’re better then them”. so pretty much beneficial traits for an organism will be more favorable, with helping them survive, hunt, etc. while less beneficial, or less favorable, will often die off.

Natural selection is the process by which animals adjust to their environments.The environment affects natural selection. Natural selection does not prefer characteristics that are better in some fundamental way.

Natural selection is a process that favors heritable characteristics that boost an organism's chances of survival and enable additional reproduction.

What decides which features are adaptive during the course of natural selection?

In evolutionary biology, we decide which qualities in an organism are adaptive (caused by natural selection) and which are non-adaptive or spandrels by examining whether or not that particular trait was something that arose for its current purpose would be an adaptation.

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lol can someone help me please ty!

Answers

Answer: A

Explanation:

Hopefully I am right. Did this a while ago. They absorb and serve as a storehouse!

A is the answer because plants need the CO2 that we give away

Please y’all help me

Answers

Answer:

im guessing decrease in the spider population

Explanation:

Answer:

B

Explanation:

Since with a decrease in spider population,the grasshopper would increase since no spider would prey on them.

Grasshopper increase would mean more feeding on grass and thus grass population decrease.

Hope it helped

How does the double-helical structure of DNA explain how the molecules can be copied or replicated?

A. Because of base pairing, each strand has all the information to serve as a template for the other strand.
B. Each strand receives the information from the DNA polymerase attached to the replication fork.
C. The nitrogenous bases on one strand are copied to the other strand.
D. The nitrogenous bases line up on each strand and are attached to each other.

Answers

Answer:

A. Because of base pairing, each strand has all the information to serve as a template for the other strand.

Explanation:

Deoxyribonucleic acid (DNA) is a molecule composed of two antiparallel polynucleotide chains. This double helix serves as a template for its own duplication. DNA templating refers to the process by which a portion of the DNA molecule in a single strand is used as a template to be copied by complementarity base pairing. According to base-pairing rules, Adenine (A) always pairs with Thymine, while Guanine (G) always pairs with Cytosine (C). These nucleotide bases are each linked with their complementary base by hydrogen bonding. When base pairs separate, the hydrogen bond acceptor and donor groups of each strand allow the addition of nucleotides and synthesis of new DNA strands, a process catalyzed by specialized enzymes (DNA polymerases).

Answer:

a

Explanation:


The Trans-Pecos ecoregion in the western portion of Texas
receive less than 38 cm of rainfall a year and has little soil due
to overgrazing by farm animals. What catastrophic event is
most likely the cause the most weathering and erosion in the
least amount of time in this ecoregion?


1.Wildfire
2.Earthquake
3.Flood
4.Tornado

Answers

Answer:

3.Flood

Explanation:

Flood is the catastrophic event which is the main cause of the most weathering and erosion in the  least amount of time in this ecoregion because there is no vegetation present in this region and the soil is vulnerable for erosion. Flash-flooding and rapid runoff are agents of erosion in the Trans-Pecos ecoregion of Texas whenever the rainfall occurs. Vegetative is very important for preventing soil erosion so the people of this region has to stop overgrazing in this area in order to avoid more erosion of the soil.


What percent of our overall global electricity use is accounted for by the internet and computer usage?

A.20%
B.5%
C.10%
D.50%

Answers

Answer:

I think it's 10% sorry if i'm wrong

Explanation:

Answer:

50 percent

Explanation:


*PLEASE HELP*
Which of the following best describes the role of the nervous system?

A. responds to all internal and external stimuli

B. detects only stimuli from outside an organism

C. responds only to stimuli occurring inside an organism

D. detects internal and external stimuli at the cellular level

Answers

I think it is A! The nervous system reacts to all internal/external, such as hormones, touch, sound, disease, etc

Which situation is a result of geotropism?

Select one:
a. Gravity pulls down on all parts of a plant.
b. Leaves are supported on strong stems.
c. A plant falls down when it wilts.
d. A stem turns to grow upward against gravity.

Answers

The answer is A. Gravity pulls down on all parts of a plant.

We discovered that both carbon dioxide and methane have been increasing in earths atmosphere. What ideas do you have about why this might be happening? What could be causing earths atmosphere to change?

Answers

Answer:

Due to human activities.

Explanation:

This change in the concentration of carbondioxide and methane gas is happening due to human activities because human used fossil fuels which can be burn in the engines of vehicles that releases carbondioxide gas in the atmosphere. Humans are responsible for the change of atmosphere which leads to change in the climate all over the world. Methane gas is also released by human activities such as using methane for cooking food.

Why do cells need to carry out
cellular respiration?
A. to obtain water
B. to release the energy in food
C. to make copies of itself

Answers

Answer:

B

Explanation

They have to realease things somehow

Three human disorders−−fragile X syndrome, myotonic dystrophy, and Huntington's disease−−are conceptually linked by a common mode of molecular upset. Choose the phenomenon that links these disorders. Three human disordersfragile X syndrome, myotonic dystrophy, and Huntington's diseaseare conceptually linked by a common mode of molecular upset. Choose the phenomenon that links these disorders. All three are caused by disparate genes, but each gene was found to contain repeats of the same trinucleotide sequence. All three are X-linked, but each gene was found to contain repeats of the same trinucleotide sequence. All three are caused by disparate genes, but each gene was found to contain repeats of a unique trinucleotide sequence. All three are X-linked, but each gene was found to contain repeats of a unique trinucleotide sequence.

Answers

Answer:

The correct answer is ''All three are caused by disparate genes, but each gene was found to contain repeats of a unique trinucleotide sequence.''

Explanation:

Four groups of trinucleotide repeats related to DNA expansion have been characterized in the human genome. CGGI GCC, CAGIGTC, CTGIGAC and recently GW CTT sequences. The CGGl GCC sequences are usually located in the noncoding regions of different genes and when expanded they associate with fragile sites on the chromosomes. The CAGIGTC repeats are part of the coding region and are related to different neurodegenerative disorders. You can try to make a classification depending on the unit that is repeated, having on one side a group that are caused by repeats of the CAG trinucleotide (cytosine, adenine, guanine). Huntington's disease (HD) is a progressive disorder of motor, cognitive and psychic function. The disease is inherited in an autosomal dominant manner, and is caused by the expansion of CAG trinucleotide repeats in exon 1 of the gene called huntingtin (HTT or IT-15). Unstable mutations have also been found in which the repeat unit does not is composed of three nucleotides, if not four, such as type 2 myotonic dystrophy, where the tetranucleotide CCTG repeats. Fragile X Syndrome consists of an abnormal expansion of the cytosine-guanine-guanine trinucleotide (CGG) in the FMR1 gene, which prevents intellectual disability and also influences the formation of connective tissue

which parrots were killed by predators

Answers

Answer: Raptorial birds especially the forest eagles, hawk-eagles, Accipiter hawks, and falcons are the most likely species to prey on adult parrots and macaws.

Explanation:

Answer:

i am a little confused do you mean what predators kill parrots or if it is predators then raptors like  owls eagles and hawks cats like jaguars

Explanation:

What is the purpose of a seed coat? (Select all that apply.)
A. protects the seed from damage as it travels
B. provides food for the seed
C. helps the seed begin photosynthesis
D. keeps the seed from drying out

Answers

A. Protects the seed from damage as it travels

protects the seed not only from mechanical stress but also from microorganism invasion

What is one of the main functions of
the endocrine system?

A To allow the body to coordinate
the actions of its muscles

B To allow the body to distribute
blood and lymph

C To allow the body to provide
support for different tissues

D To allow the body to secrete
hormones to regulate its growth

Answers

Answer:

Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction.

¿Qué función cumplen las vitaminas?, Nombra al menos 4 de ellas
indicando que función cumplen, cuál es su estructura química y en que
alimentos pueden encontrarse?

Answers

Answer:

i'm sorry but I don't understand

CH3-o-CH _CH3
[tex]c[/tex]

Answers

what are you trying to find??

What are the four ways that RNA differs from DNA?

Answers

Answer:

RNA is single standard while DNA is double standard

RNA contains the sugar ribose, while DNA contains deoxyribose.

RNA contains uracil, while DNA contains thymine.

RNA can leave the nucleus, while DNA cannot.

Explanation:

RNA is a single-stranded structure while DNA is a double-stranded structure while the former containing the uracil base and the latter containing the thymine base.

What is the difference between RNA and DNA?

DNA stands for deoxyribonucleic acid which is defined as a double-stranded molecule consisting of a long chain of nucleotides whereas RNA stands for ribonucleic acid which is defined as a single-stranded molecule consisting of a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating but RNA does not replicate on its own.

The base pairing is of DNA is as follows: GC (Guanine pairs with Cytosine) A-T (Adenine pairs with Thymine) while the base pairing of RNA is as follows: GC (Guanine pairs with Cytosine) A-U (Adenine pairs with Uracil). RNA has the sugar ribose while DNA has the sugar deoxyribose. DNA is located in the nucleus of a cell and in the mitochondria while the RNA is found in the cytoplasm, nucleus and in the ribosome.

Thus, RNA is a single-stranded structure while DNA is a double-stranded structure while the former containing the uracil base and the latter containing the thymine base.

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Based on this cladogram, which statement best describes relationships among millipede onders?

F. Stemmlullda is more dosely related to Verochesa tran Peniciuata is to Merocheta.

G.Sprostreptida is more closely related to Glonenda than Sphaerctheriida is to Glomerida.

H. Polyzoniida is more closely related to Glomeridesmida than Spheeratheriida is to Glamandesmida

J. Merocheta is more closely related to Glomeridesmida than Glomerda is to Glamandesmida.​

Answers

Answer:

From the cladogram, below statement is the best which describe the relationship which exist among the millipede onders are required.

O. H. Polyzoniida is more closely related to Glomeridesmida than Spheeratheriida is to Glamandesmida

Explanation:

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Water molecules at the surface of a body of water tend
to pull inward and resist force which is why some insects
look like they are floating on top of water.

a) cohesion
b) density
c) surface tension
d) adhesion

Answers

Answer:

surface tension

hope this helps, plz mark me as brainliest.

Answer:

c) surface tension

Explanation:

Surface tension is the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of the water molecules.

Have a nice day! ^-^

A spermatozoa has to survive the long voyage if it to be the one to find and fertilize a
mature ovum. Which statement best describes how the seminal vesicles contribute to
the sperms' chance of survival during the long journey to an ovum?

Answers

Answer:

Provides energy by releasing glucose rich fluid.

Explanation:

can someone help me plz

Answers

Answer:

answer is c

Explanation:

cuz atomic size increases

Answer:a

Explanation:

An _______. _______
is an interconnected network for delivering
electricity from suppliers to customers.
Fill in blanks

Answers

Johnny sins is an inter

Answer:

An electrical grid or power grid is an interconnected network for delivering

electricity from suppliers to customers

Which of the following best describes the difference between aerobic respiration and anaerobic respiration?
OA. Aerobic respiration occurs in plant cells, whereas anaerobic respiration occurs in animal cells.
ОВ.
Anaerobic respiration occurs in plant cells, whereas aerobic respiration occurs in animal cells,
OC
Aerobic respiration requires oxygen, whereas anaerobic respiration does not
OD. Anaerobic respiration requires oxygen, whereas aerobic respiration does not

Answers

Answer:

oD

and the number of jshskd

Caused by what please?

Answers

Answer:

Answer is letter C. third option


The perimeter of a square with side 8m is______

Answers

Answer:

32

Explanation:

Perimeter= 4 side x (number given) in this case 8

Answer:

32

Explanation:

perimeter of a square =LENGTH + LENGTH +LENGTH +LENGTH

OR 4×LENGTH

8+8+8+8=32M2

OR 4×8=32M2

You go on an expedition into the Amazon Rainforest to look for new species before they are destroyed by logging. You find one organism you have never seen before. You run a few tests to determine what kind of organism it is. You determine that it is multicellular and that it first digests, then absorbs nutrients from the environment around it. What classification fits it best?
A. Plantae
B. Animalia
C. Fungi
D. Protista

Answers

the answer is c fungi fits best

Multicellular is a cellular classification where the organism is made of more than one cell. The multicellular organism that absorbs nutrients best fits in the kingdom of Fungi. Thus, option C is correct.

What is Kingdom Fungi?

Fungi is one of the five kingdoms that are characterized by eukaryotic organisms with multicellular structures. They contain microorganisms that are heterotrophs and cannot make their own food. They absorb the nutrients from decaying organic materials.

The fungal mycelia and filaments called hyphae allow fungi like mushrooms and molds to absorb nutrients and minerals from the surrounding. They digest the nutrients with the help of enzymes.

Therefore, option C. the Fungi first digest then absorb nutrients from the environment.

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HELP PLEASE!
Life Science:
Why does Nitrogen have to be continually converted into other compounds in the Nitrogen Cycle?

Answers

Answer:

because we can breath the nitrogen otherwise we can die

Other Questions
Write is an ipo cycle? Describe with figure A rectangular portrait is 4 feet wide and 4 feet high. It costs $9.00 per foot to put a gold frame around the portrait. How much will the frame cost? use preliminary in a sentence 1. Houston houses some of the largest petrochemical plants in the United States. These factories are often found near residential neighborhoods. One survey found that factories aremore likely to be located near poorer neighborhoods because it's less complicated to obtain permits to locate there, and there's generally less public resistance. How does this practicego against the goals and purpose of environmental policy?A. It goes against the law of social responsibility,B. It goes against polluters' rights to place their factories wherever they likeC. It treats people unequally under the law, according to income, which is unjust.D. It goes against the principle that factories should be located where they cause the least damage. what is (50 + 100 * 70) / 65 + 97 - 84 * 50 What was the effect of port cities in geography answer the equations:1. 4x+162. 8 + 4x+83. x+8+x4. 4+2x+45. x+1+2x+8 The sum of 2 and the quantity 20 divided by n. The nucleus: produces energy.stores DNA.stores waste.lets things in and out of the cell. is the term used to describe the amount of control or influence that consumers have on a market.SovereigntyCompetitionOligopoly What does the dialogue on pages 156-157 reveal about Ralph and Piggys different attitudes towards Simons death? Support with at least two quotes. Who do you agree with more? Why? Chapter 10 lord of the flies On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a heart attack. The doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will have a heart attack and the test predicts it?A. 0.099B. 0.201C. 0.231D. 0.469 Use the method illustrated in the solutions to Exercise 9.2.39 to answer the following questions. (a) How many ways can the letters of the word DANCER be arranged in a row? Since the letters in the given word are distinct, there are as many arrangements of these letters in a row as there are permutations of a set with elements. So the answer is . (b) How many ways can the letters of the word DANCER be arranged in a row if D and A must remain together (in order) as a unit? (c) How many ways can the letters of the word DANCER be arranged in a row if the letters NCE must remain together (in order) as a unit? T _______________ una manzana. (comer)a. comiendob estoy comiendoc. ests comiendod.est comiendo F: 0- (-8)G: -2 4H: -2 + (-8)J: -2 devided by 4 What is the surface area to the nearest square inch ? If you answer correctly I will mark you as brainliest and give 20 points I would like help on this math problem please! If you want to know the status of certain fish stocks, you would contact the _____.NMFSFDAEPAUSDA mr.vang uses 1/6 backyard for a garden AJ's campaign team wants to use mass media to inform as many citizens as possible about his political stance. Which mass media type would reach the most people?(1 point)A billboard, because it is seen by people every day.A blog post, because the reader can save the information for later. Television, because it allows more information to reach the viewer.A pamphlet, because the reader can take it with them.