Does anybody know the phylum and class of the horseshoe crab?

Answers

Answer 1
Phylum: Arthropod, Ecdysozoa

Class: Merostomata

Answer 2
The correct Phylum for the Horseshoe crab is Arthropod,Ecdysozoa and the Class Merostomata

Related Questions

_____ tissue covers the outer surface of herbaceous or soft-stemmed plants

Answers

I believe it’s Dermal tissue.

Answer:

The correct answer would be dermal tissue.

Explanation:

The dermal tissue protects the soft tissues of herbaceous plants and soft-stemmed plants and regulates interactions with the surroundings of the plants.

It is a very thin layer that secretes a waxy layer called the cuticle that prevents water loss from the plants. It has stomata that help in the gaseous exchange of the atmosphere. It arises from the primary meristematic tissues.

Thus, the correct answer would be dermis tissue.

A chondroblast will produce the fibers and ground substance for

Answers


A chondroblast will produce the fibers and ground substance for cartilage

What causes the seasons? Please use two complete sentences

Answers

the earth moves closer to the sun and we get summer. then when the earth moves further from the sun, we get winter.

Answer: The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun. The Earth has a tilt of 23.5 degrees relative to the "ecliptic plane" (the imaginary surface formed by it's almost-cicular path around the sun).

Explanation:

A particular species is collected and is described as “dark red-brown”. How could we tell if this alga is a member of the Rhodophyta or of the Phaeophyta?

Answers

The Rhodophyta are red in color and Phaeophyta are green in color but Phaeophyta’s body may be filamentous or may show root like hold fast, stemlike stipe and leaf like blades. Many of them have air bladders which keep them afloat

We can differentiate between two algae type that contain similar pigments by paper chromatography.

Rhodophyta and Phaeophyta

Rhodophyta are red algae and are the oldest eukaryotic algae. In red color algae, phycobiliprotein is present as pigment.They are found abundantly in marine areas.Phaeophyta are brown algae in which the chlorophyll is covered with a pigment called fucoxanthin.

Thus, by chromatography we can find out which pigment is present in the species and easily find out the species of the algae.

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Classification systems ?
Are all the same
Are all different
Vary with the taxonomists
None of these

Answers

Answer: Are all different

Explanation:

A classification system is a system of categorizing, organization and naming the organisms or entities in a proper order. The classification system varies according to different subjects, author and utility of classifying the subjects of classification. It is the basis of identification, and grouping of the organisms or entities. Thus all the classification systems are different.

what structures work in antagonistic pairs to move bones?

Answers

Muscles are the tissue structures that move bones. They are connected to bones and need proteins to grow and stay healthy.

Answer is Muscles.

Muscles work on contraction. Muscles can only pull and cannot push. This means that a muscle can only move a bone in one direction and there is no way to move the bone back again. This problem is solved by having muscles in pairs, called antagonistic muscles. The antagonistic muscles work in pairs. One muscle contracts while the other relaxes.

For example, the lower arm is moved upwards when the biceps muscle contracts and the triceps muscle is relaxed. To lower the forearm again, the triceps contracts and the biceps relaxes.

If the area of a circle measures 4π cm2, what is the circumference of the circle in terms of π?

Answers

To find the circumference we must work backwards from the area to find the radius of the circle.

Area = pi x radius squared
4 x pi = pi x radius squared
4 = radius squared
2 = radius

Now that we have the radius, we can plug it into our formula for circumference.

Circumference = pi x diameter (or 2 x radius)
Circumference = pi x 4
Circumference = 4[tex] \pi [/tex]

Are humans and mammals the same? fact:
evidence:
Worth 40 points

Answers

first of all you are giving 20 but i will still answer.while some animals and humans are mammal's they are totally different.How? because comparing the body's of animals that are mammal's and humans you may see some similarity but you can also see some difference like the anus.but final answer is NO malas and humans are not the same
Yes, Humans are mammals. Meaning they give live birth, have hair, warm blooded, and breath air. 
Hey if u need help with anything contact me.

A large molecule enters a cell. Which process makes this possible ?

Answers

The process is called endocytosis (which is also called phagocytosis)

I hope this helps :3

A neutron star collapses into a black hole because of the force of fusion or gravity

Answers

It is because of the Gravity

What conclusion does the fossil record support?
A. Species have changed over time.
B. Traits acquired during a lifetime are passed to offspring.
C. Earth's organisms have not changed over time.
D. All of Earth's organisms were formed at the same time.

Answers

Should be A. Species have changed over time.

What are 3 effects of glaciation?

Answers

Three effects of glaciation would be the lowering of sea-level, the rising of sea-level, and floods.

which biome would you find plants that are adapted to survive in hot dry climates

Answers

Hello! Here is the answer to your question.

The desert biome is hot and dry, so it would be best for plants that can survive only in hot dry climates. 

I hope this helps and have a nice day!
How’s life cause lately I’ve been questioning myself

What is the greatest cause of biodiversity loss today?

Answers

Answer: Habitat destruction is a major cause for biodiversity loss. Habitat loss is caused by deforestation, overpopulation, pollution and global warming. Species which are physically large and those living in forests or oceans are more affected by habitat reduction.

Explanation:

The diverse life forms living mutually in a region is called biodiversity. It comprises flora, fauna, microbes, fungi and many others.

The major cause for biodiversity loss today is Habitat destruction.

Due to the large cutting down of trees, overgrazing of fields, contamination and global warming the natural environment of flora and fauna are disturbed.

Due to human interventions many animals have lost their territories and are on edge of extinction.

Humans have cleared large forest regions to set up industries and construction units causing deforestation.

Over exploitation of sources has led to the deficiency of reservoirs like petrol and diesel.

Therefore, habitat invasion is one of the greatest cause for biodiversity loss.

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Two squirrel populations are prevented from mating with each other because they live on opposite sides of the Colorado River. After thousands of years of evolution, the two populations have become two separate and distinct species. They can no longer mate and produce fertile young with the other squirrel population. This process is an example of
A, speciation
B, resistance
C,fossil record
D, asexual reproduction

Answers

This process is an example of speciation. Speciation is the evolution of new species from a single one.

Mendel suggested that each trait is the result of the interaction of two factors for that trait.
Which term names these factors?




A.
genes



B.
alleles



C.
traits



D.
gametes

Answers

Alleles is the term which terms the factor mentioned by the Mendel.

B.  alleles

Explanation:

Alleles allude to various types of similar qualities. Greg-or Mendel known as the Father of Genetics played out a trial with various attributes of pea plant which actuates seed shape and shading, pod shape and shading, blossom shading, stem size and area of the bloom in the stem. He crossed qualities liable for the effort of these attributes.

He made a cross among, tall and diminutive person pea plants. The allele for the tall plant is "TT" while the allele for the diminutive person plant is "tt".When they are crossed the posterity will be Tt which expresses that all are tall. From this Mendel recommended that every character is the consequence of the collaboration of two alleles for that quality that is "TT" and "tt" are the alleles liable for the effort of an attribute called tallness.

B ia your answer hope this helpe

Eric observes a metamorphic rock that has flattened, ribbon-like layers of shiny, flattened crystals. What is the best explanation for how the rock was formed?

A. Compaction and cementation

B. Cooling of magma or lava

C. Erosion and melting

D. Intense heat and pressure inside Earth

I think it's D, but I'm not sure.

Answers

Yes D is correct, only logical answer
Metamocrphic rocks are created from sedimentary, igneous or other metamorphic roccks. They are formemd deep inside the earth. Heat and pressure from the rock above flatten and bend the rock or even exchange atoms, forming new minerals.
so D) is your answer

Hope that helps

PLEASE HELP ME!!! I DONT KNOW HOW!!

You will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. You’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal In the space provided, write down what you already know about any of these features. If you’re not sure, write down questions you might have about the features.

Answers

The best between analog and digital signals to know which is more reliable for encoding and transmitting information is digital signals

Why is digital signals best?

Digitized signals are known to be signals that are often sent as wave pulses and as such they are said to be very reliable way to encode and transmit information when compared to analog signals.

Note also that Digital signals are made up of patterns that are created as a result of  sampling of a stream of continuous data at consistent intervals and they are sent or transmitted as pulses.

Therefore, The best between analog and digital signals to know which is more reliable for encoding and transmitting information is digital signals

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Digital signals are often more reliable than analog signals due to their resistance to noise, capacity for encryption, data compression capabilities, and the ability to regenerate signals without loss of quality.

Comparing Analog and Digital Signals

When determining which is more reliable for encoding and transmitting information, both analog and digital signals have distinct characteristics.

Signal Shape

Analog signals are continuously variable, representing data in a wave-like form. Digital signals consist of binary ones and zeros, creating a discrete or step-like waveform.

Numerical Values for Signal Measurements

Analog signals use a decimal numbering system, while digital signals rely on binary numeric systems (ones and zeros).

Amount of Data Transmitted

Digital data, such as those used in WiFi and Bluetooth, often allows the transmission of more data due to high-frequency carrier waves and data compression techniques.

Energy Requirements

Both analog and digital signals require energy to transmit, with a minimum energy per bit needed for wireless reception. Digital systems tend to be more energy-efficient due to better compression and transmission techniques.

Privacy and Security

The ability to encrypt digital data provides a high level of security and privacy not as easily achieved with analog transmissions.

Clarity of Signal

Clarity in digital signals is often superior because they are less susceptible to noise and can regenerate without the loss of quality.

Digital signals generally provide greater reliability for encoding and transmitting information than analog signals due to advantages in noise resistance, data compression, and encryption potential.

Please help!

Answer the below question in a paragraph.

1. Describe the plants and animals that would be found at the “Young Forest Stage” of a forest ecosystem?


2. Crocodiles are one of the oldest species on the planet. They have adaptations that allow them to exploit many niches. Explain what behavioral and structural adaptations have contributed to their success.

Answers

Answer to question no. 1:

A forest is at its young stage when it’s hardly touched by human or any external or harmful intervention, leaving it as natural as it is. That means it is filled with healthy vegetation, saplings everywhere, mature trees, vines and shrubs.

In this very rich forest environment, many species of animals thrive.  Most of them would be endangered species of migratory songbirds, mammals like white-tailed deers or rare insects.

Answer to question no. 2:

Crocodiles are able to adapt in most areas and can live for a long period of time due to several factors:

1)     They are cold-blooded.  A cold-blooded animal would have very slow metabolism so they can live without food for many months.  One big meal can keep them full for a long time.

2)     They can survive both on land and water.

3)     Just like mammals, the crocodile’s heart has four chambers that allows them to control their body temperature at a constant level. This is why they are able to adapt in many places.

4)     Crocodiles have strong senses which makes them good hunters / predators

a.     Sense of sight: they can see underwater and have night vision

b.     Good sense of smell

c.      Sensory buds in their jaws that help them detect vibrations and movements

Organisms choose to live in a clumped dispersion for all of these reasons except


A) it increases protection
B) helped with access to food
C) it increases mating possibilities
D) it decreases intraspecies competition

Answers

The answer is D! I answered it as B on a test and it was wrong lol. hope I could help before you entered it wrong too . ❤

Clumped dispersion provides benefits such as A) increased protection, B) access to food, and C) mating possibilities, but contrary to decreasing intraspecies competition, it often increases it due to the concentration of individuals in resource-rich areas.

Organisms choose to live in a clumped dispersion for several reasons; however, one reason that is not a benefit of clumped dispersion is that it decreases intraspecies competition (D). In a clumped dispersion pattern, organisms are clustered together in groups, often reflecting a patchy distribution of resources in their environment or social behaviors. Reasons for choosing clumped dispersion include:

(A) It increases protection as being part of a larger group can provide each individual with protection from predators.(B) It can help with access to food, as prey animals may rely on each other to acquire food.(C) It increases mating possibilities because organisms that are closer together may have easier reproduction opportunities.

In contrast, clumped dispersion does not decrease intraspecies competition; in fact, it can sometimes increase it since individuals are concentrated in specific areas where the resources are located.

both parents are heterozygous for the Huntington's allele. what is the chance that their child will not have Huntington's disease

Answers

Answer:

25% or 1/4

Explanation:

The cross in this question involves a gene coding for the possession or not of Huntington's disease in humans. The dominant allele is denoted by (H) while the recessive allele is denoted by (h). The possession of the dominant allele by an individual means the possession of the Huntington's disease.

In a cross between two heterozygous parents i.e. combination of both dominant and recessive alleles (Hh). Four possible offsprings will be produced with genotypes HH, Hh, Hh and hh.

The genotypes HH, Hh and Hh will phenotypically possess the Huntington's disease while the hh genotype will not possess the Huntington's disease. Hence, the chance of having a child without the disease is 1/4 or 25%.

wo events in space are described below. Event 1: The moon travels between the sun and Earth and prevents the sunlight from reaching Earth during daytime. Event 2: The moon moves into the shadow of Earth at night, and this makes it difficult to see the moon from Earth. Which event or events represent(s) a solar eclipse on Earth

Answers

The answer is Event 1. A solar eclipse occurs when the moon gets between the sun and Earth and blocks the sunlight from reaching Earth's surface during daytime, thus casting a shadow over Earth. A lunar eclipse as represented by Event 2 happens when the moon passes into the shadow of Earth at night and we can see the moon darken.
The event that it best describes is Event 1. A solar eclipse occurs when the moon gets between the sun and Earth and blocks the sunlight from reaching Earth's surface during daytime, thus casting a shadow over Earth. This can be a beautiful sight also when you will view it in your bare eyes.

WILL GIVE BRAINLIEST TO RIGHT ANSWER.
What is the advantage of using the electromagnetic spectrum model?
A. It helps compare frequencies of light.
B. It helps change the wavelengths of light.
C. The color of light waves can be changed using the model.D. The intensities of light waves can be changed using the model.

Answers

Answer:

A it helps compare frequencies of light

Explanation:

Because the frequency of light will tell if the wavelength is longer or shorter.

Please give the brainiest

Answer:

The electromagnetic spectrum describes all the wavelengths of light.

Explanation:

What is the electromagnetic Spectrum model?

The scientists used the term electromagnetic spectrum to describe the entire range of light that exists in the universe. From gamma rays to radio waves, most of the light present in the universe is invisible to us.

The electromagnetic spectrum describes all the wavelengths of light. It explores an otherwise invisible universe, from exploding stars to dark nebulae.

The electromagnetic spectrum consists of radio waves (used in commercial television and radios, radar, microwaves ), infrared radiation, visible light, gamma rays, x-rays, and ultraviolet radiation rays.

All the wavelengths and frequencies of the electromagnetic spectrum are used in spectroscopy.

Thus the electromagnetic spectrum describes all the wavelengths of light.

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Fossil fuels are
A. a natural resource
B. renewable
C. made from minerals
D. burned in hydroelectric plants

Answers

A. a natural resource

What is one function of roots

Answers

to take in the minerals from soil

Answer: The correct answer is-

To take in minerals form soil.

Roots are the significant organs of vascular plants that are located below the surface of soil.

They have specialized adaptation in their structures that enable them to absorb mineral ions ( such as sodium, potassium, phosphates, nitrates, magnesium that are very essential for plant growth) and water from the ground.

For instance, some plants possess fibrous roots that increase the surface area for absorption of minerals and other plants have tap root system ( that penetrates deep down to access water reservoirs) with lateral branches.

The association of three or more states created for mutual benefit and the achievement of shared objectives is ____. A) environmentalism B) nationalism C) regionalism D) supranationalism

Answers

The association of three or more states created for mutual benefit and the achievement of shared objectives is supranationalism.
in this type of multinational political union a large amount of power given to an authority which in theory is placed higher than the state.
In Europe the authority is the European Union.

Cross a heterozygous running, heterozygous Black mouse

Answers

The black mouse will win the race

when studying heredity, what is the relationship between dna bases and traits

Answers

The relationship between DNA bases and traits is that, the nitrogen bases in DNA decide the traits on an organism. The traits differ with respect to the nucleotides.

What is heredity ?

The study of heredity examines how qualities are conveyed from one generation to the next through sexual reproduction. Cells in offspring inherit their parents' genetic makeup.

The characteristics of an organism are determined by the placement of nitrogenous bases in DNA. Each triplet of three bases codes for a distinct amino acid.

The nucleotides that make up the mRNA are determined by the DNA bases (Adenine, Guanine, Cytosine, and Thymine), and the codons that determine which amino acids are coded by those codons are determined by the mRNA nucleotides.

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Consider the following chemical reaction,

O^2 + 2H^2 = 2H^20


What are the reactants?

What are the products?

How many molecules of H^2 are used in this reaction?




Sorry if this question doesn't make much sense... ;o;

Answers

O^2, 2H^2
2H^20
4
Each line is a different quetion.

Explain the law of conservation

Answers

The Law Of Conservation Of Energy stated that energy can be passed from one object to another but it can not be created or destroyed.

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