How do sea stars move?

Answers

Answer 1

Answer:

u mean starfish

Explanation:

they have like little tenticles on their front side of their fins? ig and they stick to the ground and move.

Answer 2

Answer:

By moving water from the vascular system into the tiny feet, the sea star can make a foot move by expanding it. This is how sea stars move around. Muscles within the feet are used to retract them. Each ray of a sea star has a light sensitive organ called an eyespot.

Explanation:

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Related Questions

In a typical food web, where would you generally classify a fungus? A. producer B. primary consumer C. secondary consumer d. tertiary consumer E. decomposer​

Answers

Answer:

A

Explanation:

a fungus is a plant so it is a producer

According to Darwin, how
did traits pass from one
generation to the next?
A. He did not know what mechanism
powered this process.
B. He studied how heritable traits
were passed down from parent to
offspring.
C. He theorized about genetics being
the driving force for these changes.

Answers

B is the answer to this problem

If Mendel had studied plants that reproduce asexually, he would not have been able to develop his laws of inheritance. Explain why. (hint: what's the main difference between sexual and asexual reproduction and why was this important when studying genes that get passed on?)

Answers

Answer:

He would not have been able to develop his laws of inheritance

Explanation:

if he had done it and work out his law on organisms that reproduce sexually it would have taken longer period than reproduction by asexual method .

Which is an ABIOTIC factor in biomes? *
A. average temperature
B. kinds of trees
C. moss and algae
D. number of insect species

Answers

A. average temperature.

Answer:

D. number of insect species

Explanation:

I got it correct

Compare and Contrast Viruses and bacteria in regard to their structure.
Bacteria:
Viruses:

Answers

Answer:

On a biological level, the main difference is that bacteria and free-living cells can live inside or outside a body, while viruses are a non-living collection of molocules that need a host to survive.

Explanation:

la cromatina esta formada por adn asociado a

Answers

Answer:

La cromatina es una sustancia dentro de un cromosoma que consiste en ADN y proteínas. El ADN lleva las instrucciones genéticas de la célula. Las principales proteínas de la cromatina son las histonas, que ayudan a empaquetar el ADN de una forma compacta que cabe en el núcleo celular. Los cambios en la estructura de la cromatina se asocian con la replicación del ADN y la expresión génica.

Explanation:

Lisa is using a magnet to pick up various
objects. Which object is not attracted to her
magnet?
(A cobalt
(В iron
(C) nickel
(D) wood

Answers

Answer:

wood is not attracted to her magnet

how will an increase in number of malaria infection would affect the south african economy​

Answers

Malaria is one of the world's most serious tropical diseases and imposes very significant economic costs on some of the poorest nations on earth. This study estimates the direct and indirect costs of malaria to South Africa and examines the issues surrounding the use of DDT as an anti-malaria insecticide.

Early records of malaria cases by Europeans in the late 19th and early 20th centuries show that malaria was a severe inhibitor of economic development and caused large economic costs. The current malarial areas in South Africa today are about one fifth of the size they were at the beginning of the 20th century. The historical success in controlling malaria is due in very large part to the use of DDT in malaria vector control.

In recent years, however, there has been a sharp rise in the number of malaria cases in South Africa, and indeed throughout Southern Africa. This rise is due to a number of factors, such as high rainfall in recent years, increased migration and a reduction in the use of DDT in vector control. The rise in malaria cases imposes heavy costs on the local and national economies. The economic cost (direct costs include the costs of care and control of malaria, and indirect costs include the losses in productivity and lost future earnings from death) of malaria in South Africa is conservatively estimated to be around R124 million (US$20 million) in 1997/98. Malaria in selected Southern African countries could cost as much as US$1,000 million, or 4% of GDP in 1998. In South Africa, malaria usually occurs in rural areas with agricultural and labour intensive industries. The incidence of malaria in these areas has severe economic impacts and as in the past, continues to hamper economic development

For a number of reasons, DDT is being phased out of the malaria control programmes in South Africa. Numerous environmentalist organisations have lobbied strongly for the banning of DDT, despite the success of the insecticide in saving lives and preventing disease in developing countries. While DDT is not an ideal insecticide, it does have numerous advantages over the alternative insecticides and has a proven track record. Although DDT is currently used by a number of Southern African countries in malaria control programmes, the UNEP Governing Council is pressing for the banning of DDT and eleven other persistent organic pollutants (POPs).

The potential banning of DDT highlights a trend whereby environmental pressure from mostly developed countries imposes standards on developing countries where they are neither accepted nor appropriate. While there are alternatives to DDT, these are all more expensive and frequently more complicated to use than DDT. The banning of DDT would not only remove an important anti-malaria weapon, but will result in countless deaths and very significant economic costs (perhaps as much as US$480 million) on countries that can ill afford it. Hope this helps! Mark brainly!

Help please!!!!!

What is true of dermal tissue?
a. It forms the outer layer of the plant
b. It includes structures such as the root hairs
c. Its primary function is protection
d. All of the above

Answers

Answer: D. All of the above

Dermal tissues also called epidermis, make up the outer layer of all plant organs (Roots, leaves e.t.c). They have three main tissue types which are ground tissue, vascular, and dermal, all plant organs contain these three tissues.

Please no links
1. Which statement below best describes an eclipse?
A. An eclipse happens during new moon when the moon is shadowed.
B. An eclipse is part of the moon phases occurring every month.
C. An eclipse will last for a couple days and then return to normal.
D. An eclipse is the only time the Earth shadows the moon.

Answers

Answer:

D. An eclipse is the only time the Earth shadows the moon.

Explanation:

The other ones doen't make sense, the true definition of an eclipse is: That the eclipse is an phenomenon (sorry if the word is wrong but i'm Latina) in which the light coming from a celestial body is blocked by another eclipsing body.

The diagram below represents a stack of rock layers. Examine the diagram, and answer the question that follows. What do these layers and their fossils suggest about Earth's history?

Answers

Answer:

The farther down a layer with a fossil in it the farther back in earths history that organism lived.

Explanation:

Answer:

Layer T is older than 110 million years, and Layers R, X, and G are younger than 110 million years.

Explanation:

Because the principle of superposisiton states that younger layers of rock will be closer to the surface while older layers of rocks will be father to the surface therefore older

What type of mutation does the picture represent?

Answers

I’m pretty sure it’s duplication, it even says so on the picture of the chromosome :)

1.2 Which of the following does NOT OCCUR DURING INTERPHASE?
A spindle formation
B cytokinesis
С DNA replication
D growth​

Answers

Answer:

B. cytokinesis

Explanation:

Cytokinesis occurs at the end of mitosis/meiosis.

The answer would be



B

Long tail X short tail + all long.

Mate two of these long tailed mice together and you get 3/4 long, 1/4 short.


C. Incomplete dominance




E. Dihybrid cross


A. Dominant/recessive gene


B. Codominance


D. Lethal gene

Answers

ANSWER: E

Dihybrid cross


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If a leaf of a garden pea with fourteen chromosomes is damaged, the new leaf cells will have how many chromosomes.
16
14
7

Answers

Answer:

14

Explanation:

Answer:

The new leaf cells will have 14 chromosomes.

Explanation:

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how animals use Esters​

Answers

Answer:C-O-H groups, is the alcohol plants and animals use to make oils and fats - which are esters we use in food and soaps.

Explanation:

Which organelle converts sugars into energy?

A. lysosome
B. mitochondrion
C. nucleus
D. ribosome

Answers

B. Mitochondrion because it is the powerhouse of the cell and it is where sugar is broken down into ATP

The organelle that converts sugars into energy is the mytochondrion, which is the powerhouse of the cell, so the correct option is B. mitochondrion

Which organelle converts sugars into energy?

The mitochondrion is often referred to as the "powerhouse" of the cell because it is responsible for generating energy in the form of adenosine triphosphate (ATP) through a process called cellular respiration.

During cellular respiration, glucose (a sugar) and oxygen are metabolized within the mitochondria to produce ATP, which serves as the primary energy currency of the cell. The mitochondria are present in most eukaryotic cells and play a crucial role in energy production.

Learn more about organelles at:

https://brainly.com/question/6563752

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A(n)\ is an area of the planet that shaves similar conditions of climate, fauna (animal life), flora (plant life) and geography .
1.biome
2.environment
3.habitat
4.ecosystem

Answers

Pum pum



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A person infected with human immunodeficiency virus (HIV) may not have any symptoms for a period of time. During this period the
virus affects the body by doing which of the following?
A) The virus changes the identity of the nucleotides of immune cells to prevent the immune system from function normally.
B) The virus damages immune cells while using their machinery to produce copies of itself.
C) The virus uses nutrients meant for immune cells to fuel its own cellular respiration.
D) The virus produces toxins that weaken the immune cells and prevent them from reproducing.

Answers

Answer:

a

Explanation:

Define "environmental refugee"

Answers

people who are forced to leave their home region due to sudden or long-term changes to their local environment

This is the best answer i found for you!

1/5. Climate refugees are people who must leave their homes and communities because of the effects of climate change and global warming. Climate change is caused by natural events, such as volcanic eruptions, as well as human activities.

Hope this helps!

Have a great day!

- Hailey

Leah leaves her house to go to school. She travels 6km south, then 6km east, and finally 6km north.

Answers

Answer: 18

Explanation:

Proteins are flexible and dynamic which mean that they can do what?

Answers

Answer:It enables them to operate by allowing molecular interactions to take place inside the cell, between cells, and even between organisms.

Explanation:

How can polyploidy cause speciation in plants?

Plants can sexually reproduce only when they are polyploid. Having the condition is normal in plants.
Plants can asexually reproduce or pollinate themselves. This allows polyploid individuals to reproduce.
Plants can repair polyploidy and obtain healthy cells. This allows plants to survive and reproduce.
Plants are not affected by polyploidy. Plants with the condition can reproduce normally.

Answers

Plants can asexually reproduce or pollinate themselves. This allows polyploid individuals to reproduce, this results develop cause speciation in plants, hence option B is correct.

What is polyploidy in plants?

Polyploidy, which occurs when two or more genomes fuse within one nucleus, causes each cell to possess more than two pairs of homologous chromosomes.

Most angiosperms exhibit polyploidy, which is crucial for the survival of the agricultural crops on which people depend.

Three or more sets of homologous chromosomes are present in polyploid plants. These plants' increased chromosome count is the outcome of a genome duplication event.

Therefore, plants can asexually reproduce or pollinate themselves. This allows polyploid individuals to reproduce.

Learn more about polyploidy, here:

https://brainly.com/question/15570384

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Answer:

Plants can asexually reproduce or pollinate themselves. This allows polyploid individuals to reproduce.

Explanation:

I just did the workbook.

6. Every spring, an ecologist records several environmental
measures and is looking for a relationship to the deer
population in a state park. Using her data below, what
generalization can you make?
Year
Deer
Population Average Temp Annual Rainfall
2010
367
74°
40 inches
2011
134
75°
14 inches
2012
284
69°
37 inches
А
The deer population decreases with sudden spikes in
temperature.
Deer are dependent on grass growing with ample
rainfall.
Deer do not adapt well in cooler environments.
There was significantly more hunting in 2011.

Answers

Answer: B - Deer are dependent on grass growing with ample rainfall.

Explanation:

When the 40 inches of rainfall Per year is stable is when Deer population increases since the grasses they eat need rainfall for growth.

a mouse eats acorns and seeds off the ground (A)CONSUMER (B) DECOMPOSER (C) HERBAVIOR (D) PRODUCER.

Answers

Answer:

A

Explanation:

Its a consumer because it eats plants

Answer:

He is (a) consumer

Explanation:

How would blood flow be affected if the aorta decreased in diameter?

Answers

Answer:

A decreased diameter means more of the blood contacts the vessel wall, and resistance increases, subsequently decreasing flow. The influence of lumen diameter on resistance is dramatic: A slight increase or decrease in diameter causes a huge decrease or increase in resistance.

Parasites such as bacteria, viruses, and yeasts infest only careless people.

True
False

Answers

Answer:

false

Explanation:

all the things listed can happen to anyone for multiple reasons not because of carelessness

2b. Based on your answer for 2a, which reintroduction site would you expect to see the largest number of
surviving ferrets? (1)
a
El Cuervo (MX)
b. Cheyenne River
C. Badlands
d. FL Belknap

Answers

B hope that helps have a good one

how the plantlets are produced?​

Answers

Plantlets are young or small plants. Many plants such as spider plants naturally create stolons with plantlets on the ends as a form of asexual reproduction. Vegetative propagules or clippings of mature plants may form plantlets. An example is mother of thousands. Hope this helps! Mark brainly please!

What's a representation of all the producer and consumer relationships within a community or ecosystem?
A. food pyramid
B. food chain
C. food web
D. food log

Answers

I think it’s either a food chain or food web. A food web is a diagram of feeding relationships that include multiple intersecting food chains.

Hello!

Let's look at some definitions!

A food pyramid is levels of predators, in an pyramid shape to show the successive.

That does not match the definition your question provided, so we can move on.

A food chain is a series of animals who depend on each other for food/buisness.

Again, it does not match, this is a series, not an entire ecosystem.

A food web is a connection of food chains, which show the entire relationships of an ecosystem.

This definition is fairly close to the listed definition, lets keep this in mind.

A food log is a chart of what you eat each day.

Trick answer! This has nothing to do with the subject.

Given these choices, the correct answer is:

Food Web

waffletowne

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Solve the simultaneous equationsy x = 3y = 7x I'm gonna give 25 points if you can help me with the 6 questions 1.What is the solution for 4x293.What is a solution for 6> a/3 +4 ?3.What is the solution for 3+ 4x >5 ?4.What is the solution for 13 x/2 >3 ?5..What is the solution for 28 +14r Someone help me please!! It is Timed!!! Brainiest if answered correctly!!!! No link, reported if posted!!!! Which would be the next step? How do severe weather events form? PLEASE HURRY IM TIMED I WILL GIVE BRAINYEST What is another name for the sunlit zone of the ocean?A twilight zoneB abyssal zoneC photic zoneD benthic zone What would a sense of morality allow machines to do?A.make appropriate choices in high pressure situations B.better interact with humans and animalsC.value human life above all elseD.achieve a greater intelligence than humans Fractional distilation of liquid air usually produces nitrogen and oxygen as major products . Substance used to remove carbon iv oxide from air before its changed to liquid Please help answer these, thank you PLEASE HELP. NO LINKS. NEED REAL EXPLANATION. What is the meaning of the word perturb as used in the passage? Use the antonym calm as a context clue to help you determine the meaning. please help i am give brinliestWhich of the following correctly matches a property of an organic molecule with how that property helps the organic molecule function in living organisms? A. Carbohydrates lower the activation energy of certain reactions. This allows metabolic processes to take place at a rate that can sustain life. B. Proteins contain nucleotides that encode genetic material. This allows proteins to accurately pass genetic information from one cell to another. C. Nucleic acids contain multiple carbon-hydrogen bonds. This allows nucleic acids to provide energy for living organisms by breaking these bonds. D. Lipids are insoluble in water. This allows lipids that make up biological membranes to regulate the entry and exit of many substances.No dam links If a linear function has a slope of 3 and a y- intercept of -6 what is the equation of the graph of the function in slope - intercept form HELP first letter for movie Answer plsss........ A cone has a radius of 7 m and a height of 18 m . What is the approximate volume of the cone to the nearest tenth? Use 3.14 for pie A circular fountain has a drain in the center. The distance from the drain to the edge of the fountain is 3 feet. What is the circumference of the fountain? Round your answer to the nearest tenth of a foot. Find the pattern and use it to list the next two terms in the sequence.-53, - 45, 37, - 29,-53, -45, -37, - 29, Find the value of x in the isosceles triangle below then find the measure of the base angle.x = __Measure of 1 base angle = __ who sings song passive voice