What symbiotic relationships do sea urchins have?

Answers

Answer 1

There are four main symbiotic relationships that sea urchins have : mutualism, commensalism, parasitism, and competition. To explore these relationships, let's consider a natural ecosystem such as the ocean.

Echinoderms classified as sea urchins are spiky, spherical echinoderms. Every ocean's seabed is home to about 950 different species of sea urchins, which can be found from the intertidal shoreline to 5,000 metres below the surface. Sea urchins have spherical, hard shells (tests) that range in length from 3 to 10 cm and are covered in spines, while the black sea urchin can have spines that are up to 30 cm long. Sea urchins crawl slowly on their tube feet.

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Related Questions

why does mumbai hv an equable climate while nagpur has an extreme climate

Answers

Answer:

Mumbai have moderate climate because it is situated near the sea which gives it its favourable climate whereas Nagpur is situated in the peninsular plateau of India due to which it have Continental type of climate that is in Nagpur the winters will be cold and the summers will be hotter as compared to Mumbai.

Explanation:

Hello! Please would you mind helping me out?

Answers

This is very easy but sure!

Answer to bacon: bacon appeals to my senses by sent, when I smell this food I want to eat it or it makes me hungry.

Answer to pizza: pizza also appeals to my senses by sent because if my dad or mom brings home pizza I normally get hungry or in the mood for pizza.

Answer to orange juice: orange juice appeals to my senses by nothing to be honest because I don’t really like orange juice but I would have to say it appeals to my senses by taste because when I drink it it kinda taste good. (Ps. I don’t like orange juice you might so I probably would not use this one)

Answer to: watermelon: watermelon appeals to my senses by taste again because I really love watermelon it’s just so juicy and delicious that I would have it at any time of the day!

Sorry this is not the best but I tried have a nice day!

Why is Washington called the “Father of Our Country?”


He took military control of the country after the Revolutionary War.


He was a Patriot, a great military commander, and an example for presidents.


He wrote most of the United States Constitution.


His writings convinced the British to give the colonies their independence.

Answers

Answer:

because he was a man who held fast to the trust as a leader, and was responsible in dealing with problems in the economy and he was a leader who listened to the grievances of the people and helped the people

Some of the worst mass murderers in history, such as Joseph Stalin in Russia and Mao Zedong in China, have been communist dictators.
A, True
B, Flase

Answers

Answer:

A. TRUE

Explanation:

Stalin's purges of intellectuals, military leaders that could be a threat to him,  religious leaders, essentially anyone judged as a utilitarian waste or threat were killed in the millions.  Stalin killed off more "enemies of the state than those killed in WWII.

Mao, similar communist dictator did the same in China.

Death squads sought out innocent people and killed them just to intimidate others.  Often times torture and gruesome deaths.  Worked to death in slave labor camps etc.

_______ the economic and social status of individuals

A: socioeconomic


B: Social Studies


C: Trade Barriers


D: Quota

Answers

Answer:

option  A     socioeconomic is your answer

Explanation:

 

    hope it work!

  Brainliest plz

Most young people who learn mariachi music
already know Spanish. True or false?
O FALSE
O TRUE?

Answers

Answer:

True because mariachi music is in spanish so in order to learn the type of music you need to lean the language

Explanation:

Answer:

False

Explanation:

four reasons for Nepal to
establish diplomatic relations plz help ​

Answers

Answer:

Multilateral relations of Nepal. Nepal has played an active role in the formation of the economic development-oriented South Asian Association for Regional Cooperation (SAARC) and is the site of its secretariat. Human rights issues. International disputes. International trade. Illicit drugs. Bilateral relations.


What was George Washington's role during the Constitutional Convention

Answers

(A )his rule was to over see the debates

Answer:

his rule was to over see the debates

Explanation:

find the product of (6×±7y) and (5×-3y)



answer...........?​

Answers

Explanation:

30x^2 - 18xy + 35 xy -21y^2

30x^2 + 17xy - 21y^2

Ethics are not a consideration in which one of the following fields of research? Or do ethics enter in all of these fields?

a)Natural sciences
b)psychology
c)Medical
d)ethics enter in all of them

Answers

Answer:

goomba says D

Explanation:

Which of the following describes the army of Alexander the Great..

It refused to keep fighting after 11 years of conquests

It came back to Greece after each victory

It wasn’t trained well and lost many battles

It was huge and moved slowest when attacking

Answers

It refused to keep fighting after 11years of conquest

Which of the following describes Spartans women..

They were trained to be strong and could own land

They were treated harshly, almost like slaves

They fought as soldiers alongside men

They didn’t have to obey men

Answers

Answer: they were treated harshly, almost live slaves

Explanation:

What is the first name of the singer in the interactive Vienna State Opera

Answers

Answer:

the answer is

Hermine Kittel

What could be done to increase survival rates of the species?
(Bald eagle)

Answers

Answer:

Increasing genetic diversity, evolution, and adaptation

Explanation:

The Articles of Confederation stated that any changes in the government would require the agreement of all the states. Why was this considered a weakness of the Articles?

A.

it meant the government could not enforce laws

B.

it meant that Congress had too much power

C.

it meant that citizens had no say in changing the government

D.

it meant that changing the government was difficult

Answers

Answer:

D is your answer, it would be difficult for all states to agree on the changing of government.

Answer:

d

Explanation:

What are the features of the Model Code of Conduct?

Answers

Answer:

'Election Commission of India's Model Code of Conduct is a set of guidelines issued by the Election Commission of India for conduct of political parties and candidates during elections mainly with respect to speeches, polling day, polling booths, portfolios, election manifestos, processions and general conduct. These set of norms has been evolved with the consensus of political parties who have consented to abide by the principles embodied in the said code in its letter and spirit. The Model Code of Conduct comes into force immediately on announcement of the election schedule by the commission for the need of ensuring free and fair elections.[1] Its main purpose is to ensure that ruling parties, at the Centre and in the States, do not misuse their position of advantage to gain an unfair edge. It is designed to avert practices which are deemed corrupt under model code of conduct . For example, politicians should not make hate speeches, putting one community against another or make promises about new projects that may sway a voter.

Explanation:

Please give thanks to all my answers and please mark as brilliant and please follow me

What do you know about your question? (List 1-3 Things)


“The Mount Rushmore National Monument is carved from the granite of South Dakota’s Black Hills. What type of rock is granite?”

Answers

Answer:

Igneous

Explanation:

Consider how granite changes form. Granite is an igneous rock that forms when magma cools relatively slowly underground. It is usually composed primarily of the minerals quartz, feldspar, and mica.

Explain how economists use the term “guns or butter¨

Answers

Guns and butter generally refers to the dynamics involved in a federal government's allocations to defense versus social programs when deciding on a budget. Both areas can be critically important to a nation's economy. Times of war can have a substantial effect on a country's economy and its societal progression.

some refer to the caucasus region as_______________. A. western europe B. little Europe C. little Asia D. eurasia​

Answers

Answer:

eurasia

Explanation:

Answer:

d

Explanation:

What effect did changes in agriculture have on the Industrial revolution?

Answers

Answer:

Changes such as seed drills, better farming methods,& better live stock breedingincreased food supply which allowed population to grow. Poor farmers thrown off their land moved to the city and became the workforce for the industrial revolution LAND, CAPITAL & LABOR.

how can a person be employed​

Answers

Identify your transferable skills.
Write and practice saying your TMAY – “Tell Me About Yourself.”
Set objectives for yourself.
Polish your résumé
Network like crazy.
Use LinkedIn.
Apply, apply, apply.
Do your research.

Hope this helps

who was the first prime minister of Nepal?​

Answers

Answer:

The first elected prime minister was B. P. Koirala, in 1959. After he was deposed and imprisoned in 1960, King Mahendra established the Panchayat system and the country did not have a democratic government until 1990.

Explanation:

In our search for the world’s creepy crypts and catacombs, we visit chapel of bones in évora, portugal, adorned with 5,000 skeletons. What message does one find by the chapel entrance?.

Answers

This is the message found at Chapel Entrance We, the bones that are here, await yours.

What is the exact message written on it?

Pára Aqui a considerar que an este estado hás-de chegar is the message engraved in Portuguese over the door of the bone chapel in Faro (stop here and consider that you will reach this state too).

"Nós ossos que aqui estamos pelos vossos esperamos" (We bones that are here, for yours await) is the motto of the bone chapel in Évora.

In essence, they both assert that life is fleeting. Make the most of your one life for it will soon expire and you will join the ranks of the dead. Or, YOLO in today's parlance.

At least, most of us now can infer that lesson from it.

Therefore, We, the bones that are here, await yours is what is written on it.

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what is the definition of disaster according to Cambridge Dictionary​

Answers

Answer:

(an event that results in) great harm, damage, or death, or serious difficulty:

+An inquiry was ordered into the recent rail disaster (= a serious train accident).

+It would be a disaster for me if I lost my job.

+This is one of the worst natural disasters ever to befall the area.

+Heavy and prolonged rain can spell disaster for many plants.

+Everything was going smoothly until suddenly disaster struck.

+Inviting James and Ivan to dinner on the same evening was a recipe for disaster (= caused a very difficult situation) - they always argue with each other.

How is time measured in Ancient China

Answers

Answer:

The ancient Chinese used candles to tell the time. Candle clocks were created by engraving the length of the candle with evenly spaced markings

Answer:

They would use candles to tell time.

Explanation:

They would engrave the length of the candle with evenly spaced marks, with each mark representing a unit of time (Like an hour for example). As the was melted, the hour would melt away.

How Did the Nile Shape Ancient Egypt?
I need it for an essay if you guys could help. Thank you

Answers

Answer:

the nile was very important because it was bot a source of food (fish) and flooding made the soil fertle for crops

Explanation:

please add brainliest if correct:)

Please help or my moms gonna kill me

Answers

Answer:

the seconds choose I hope this helps

Answer:

intragovernmental

Explanation:

Which amendment states that a person does not have to testify against himself/herself in court?​

Answers

Answer:

Fith amendment

Explanation:

Answer:

the fifth

Explanation:

Please answer some of these questions, they are about the Renaissance era and vocabulary that goes with them

Answers

Answer:

9. Humanism: emphasis on human potential and achievement. Doctrine promoting the welfare of mankind.

Humanism in the Renaissance made people want to learn more to be able to accomplish more.

10. Secular: concerned with worldly rather than spiritual matters

Politicians are the secular leaders of society

11. Patron: people that buy art or financially support artists

The Medici family were great patrons of the arts in the Renaissance.

12. Perspective: a way of looking at things

The photo of the tree in my backyard from my house has a completely different perspective than my neighbor's house.

13. Vernacular: the common language of the people

Shakespeare's plays were popular because they were not in Latin; they were written in the vernacular.

14. Utopia: Sir Thomas More (1477 - 1535)  coined the word 'utopia' from the Greek ou-topos meaning 'no place' or 'nowhere'. It was a pun - the almost identical Greek word eu-topos means 'a good place'.

We'd all like to live in utopia to get away from illness and fighting.

15. Johann Gutenberg: Creator of the printing press

The first Bible not copied by hand was printed on Johann Gutenberg's printing press in Germany.

16. Indulgence: a pardon that releases the sinner from their penalty of sin

Corrupt priests sold indulgences to wealthy members of society who had sinned.

17. Reformation: a movement of religious reform

Martin Luther started the Reformation to try to get the Catholic church to stop being corrupt

18. Annul: declare invalid

Henry VIII wanted the church to annul his marriage so he could marry someone else

19. Council of Trent: a meeting held by the Catholic Church to try to stop everyone from going to a protestant church.

The Council of Trent was the Catholic Church's counter-reformation attempt.

20. Jesuits: followers of the society of Jesus

Jesuits founded many academic institutions that are still open today

21. Anabaptistism: the belief that baptism should only be administered to believing adults.

Because they preached anabaptism, they refused to baptize the baby in front of them.

22. Calvanism: Protestant belief system started by John Calvin.

Calvanism believes people are saved/can go to heaven by faith alone and believe that our lives are predestined. We can't change what is going to happen.

Good deeds always bxing good. Conseque?
nces "Explain with examples.​

Answers

Good Deeds List
Call a family member to tell them you love them.
Fill an expiring parking meter.
Leave some extra money in a vending machine.
Plant a tree.
Write a thank you letter to your parents.
Compliment a stranger.
Ask someone “How are you?” and listen.
Bake some goods for your neighbor(s).
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