According to this dichotomous key, any catfish must have
a double dorsal fin, a small fin on the back near the tail, and barbs near the mouth.
a single dorsal fin, no small fin on the back near the tail, and barbs near the mouth.
a double dorsal fin, a small fin on the back near the tail, and no barbs near the mouth.
a single dorsal fin, a small fin on the back near the tail, and barbs near the mouth.

Answers

Answer 1

a single dorsal fin, a small fin on the back near the tail, and barbs near the mouth.

Answer 2

Answer:

d

Explanation:

a single dorsal fin, a small fin on the back near the tail, and barbs near the mouth.


Related Questions

When graphing data, what will make it
more precise?
A. using larger units
B. making it cover most of the graph
C. using a bar graph
D. connecting all the points plotted

Answers

Answer:

A. using larger units

Explanation:

Graphs can be used to display large amounts of numerical data and to portray the relationships between numerical values of different variables

When graphing data, what will make it more precise would be to ensure that it covers most of the space on the graph sheet. The correct option would, therefore, be B.

Using larger units may result in inaccurate plotting of small variablesNot all data can be represented as a bar graphConnecting all the points plotted has no bearing on the precision of a graph

Making your graph to cover, at least, 2/3 of the graph space will ensure that your plots are visible and lead to a more precise graph.

More on graph plotting can be found here: https://brainly.com/question/23553731

The Xylem carries ______.
A. water

B. sugar

Answers

Answer:

A

Explanation:

The phloem carries sugar

Plz I need help I will give you 50 points

Answers

Answer:

what is the name of this website or the book

please tell me

Answer:

ok so lets elimnate we already have tips on how to save thanks to our teacher/classmates and even if we didnt we can look them up and there baiscly all the same thing so A is out. answer B is pretty good so we will wait to the end C is common sense i dont tink it would that because the teacher is giving us 2 months and u pay rent every 1 month so thats out so that leaves u with B and D. i personally i think its D but usally rent stays the same for each month unless the person who  owns building charges u more which they tell you about

Explanation:

hi please help i’ll give brainliest thanks

Answers

Answer:

B winter

Explanation:

I hope I helped

Cause if the south is oriented towards the sun that means it's summer and the oppsite of summer is winter

How is ADP
converted to ATP?

Answers

Answer:

ADP is converted to ATP for the storing of energy by the addition of a high-energy phosphate group. The conversion takes place in the substance between the cell membrane and the nucleus, known as the cytoplasm, or in special energy-producing structures called mitochondria.

Explanation:

6. When does the DNA in a cell replicate?
a. before cell division (mitosis or meiosis)
b. during cell division (mitosis or meiosis)
after cell division (mitosis or meiosis)
d. at random times throughout the cell's life cycle

Answers

Answer:

the answer is A before cell division (mitosis or meiosis)

Explanation:

The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.

what reactant molecules are needed for photosynthesis?​

Answers

Answer:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas.

Answer:Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants .

Explanation:

After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules

Which of the following applications of genetic engineering is preventative and helps
individuals fight infection before its onset?

A)Insulin production
B)Vaccine production
C)Stem cell therapy
D)Gene therapy

Answers

B I think(sorry if you get this wrong)
The answer is B very sure

What is pisciculture?​

Answers

Answer:

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The breeding, rearing, and transplantation of fish by artificial means is called pisciculture, in other words, fish farming. It is the principal form of aquaculture, while other methods may fall under mariculture. It involves raising fish commercially in tanks or enclosures, usually for food

Explain why some of your arterioles dilate while others construct during exercise.

Answers

Answer:

It looks at the role of adenosine triphosphate, or ATP, a chemical that can be released by red blood cells and is believed to cause blood vessels to dilate during exercise, when muscles demand more oxygen.

Explanation:

Hope this helped Mark BRAINLIEST!!!

The drawing below was sketched by a student who was observing cells under a microscope.




In what kingdom does the above cell likely belong?

Answers

Answer:

protista

Explanation:

It just looks like a protista cell, I think

Please help ASAP
Which of these is NOT an example of an environmental factor that can affect an organism's growth?

Inheriting the gene for purple flower petals
or
Limited or no shelter/space to nurture offspring
or
inadequate sunlight
or
insufficient access to water or nutrients

Answers

inheriting the gene for purple flower petals

La influencia que tiene la temperatura en la reproducción de los paramecios, en muestras de agua estancada

Answers

Answer:

Para un paramecio la temperatura óptima requerida para llevar a cabo sus funciones metabólicas (incluida la reproducción) se encuentra entre 24 °C y 28 °C

Explanation:

Los paramecios (género Paramecium) son protozoarios, es decir, organismos microscópicos del reino protista. Un paramecio es un organismo unicelular que puede llevar a cabo todas las funciones esenciales de un modo funcionalmente similar a una célula animal. Los paramecios pueden reproducirse tanto de manera sexual como asexual (bipartición). Estos organismos viven en cuerpos de agua dulce rica en nutrientes orgánicos como estanques, charcos, regiones de ríos parcialmente estancadas, etc. En estos ambientes los paramecios se reproducen de un modo óptimo a una temperatura entre 24 °C y 28 °C, donde pueden llegar a dividirse hasta 4 veces al día.

Explain how the release of energy (cooling) affects the speed of the particles in a substance

Answers

Answer: When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

Explanation:

Lyme disease, rabies, and malaria are mostly spread bya.bites from animals, such as dogs and mosquitoes.b.contaminated foods, like chicken and beef.c.contaminated objects, like doorknobs.d.indirect contact with an infected person.____6.Many pathogens are kept out of the body by thea.immune system.b.inflammation response.c.lymphatic system.d.skin. ____7.Your body's first line of defense against infectious disease includesa.skin, mucous membranes, saliva, and tears.b.phagocytes, lymphocytes, and pus.c.T cells, B cells, and antibodies.d.the lymphatic system, immune system, and inflammation response.____8.The body's second line of defense against pathogens isa.a vaccine.b.immunity.c.inflammation.d.the skin.____9.The body's third and most sophisticated line of defense against pathogens isa.a vaccination.b.inflammation.c.the immune system.d.the skin.____10.What produces active immunity

Answers

Answer:

Explanation:

6. Lyme disease, rabies, and malaria are mostly spread by bites from animals, such as dogs and mosquitoes.

7. Your body's first line of defense against infectious disease includes skin, mucous membranes, saliva, and tears.

8. The body's second line of defense against pathogens is Immunity.

9. .The body's third and most sophisticated line of defense against pathogens is a vaccination.

10.

what is the potential disadvantage of external digestion ​

Answers

This dispersal reduces the likelihood that a sperm will find an egg. Many sperm and eggs die before achieving fertilization. The low success rate of external fertilization puts animals at a reproductive disadvantage compared to internal fertilization.

why is sexual reproduction a necessity for sharks

Answers

Answer:

cause they can't asexually reproduce

Explanation:

a shark has to reproduce and is too big of an organism to use asexual reproduction, so there's only one left

The accessory organs assist the digestive organs in the chemical digestion of food. An injury to which organ can hamper the digestion of fats, carbohydrates, and proteins?

Answers

Answer:

Pancreas

Explanation:

The Pancreas produces enzymes that aid the digestion of fats, carbohydrates, and proteins.

Answer:

The answer is Pancreas

Explanation:

It is the banana shaped organ, hope this helps!

In a population of 100 people, 30 have brown hair and 70 have black hair. What is the Relative Frequency for Black hair?

Answers

Answer:

0.7

Explanation:

Given that in statistics, the Relative Frequency is the Frequency of the class divided by Total.

Hence, in this case, the Relative Frequency of black hair is the Frequency of black hair divided by the Total.

Hence, we have 70 ÷ 100

=> 0.7

Therefore, the correct answer is 0.7 Relative frequency.

What is the relationship between gene regulation and mutation?

Answers

Answer:

They include: mutations in transcription factors and signalling proteins; mutations in factors that regulate the methylation of DNA and associated histone proteins; mutations in the protein complex cohesin, which regulates chromatin structure; and mutations in proteins involved in splicing

Explanation:

 :  )

CO2 is made up of what two atoms and what is its common name?

Answers

Answer:

Carbon Dioxide

Explanation:

Question 4

2 pts

The number of chemical industries along Florida's rivers is increasing. What is the most

likely consequence of this increased industrialization?

O a decrease in the amount of water pollution

O an increase in the amount of water available for recreational use

an increase in the destruction of natural food webs

O a decrease int he amount of water needed by industry

Answers

Answer:

The correct answer would be - an increase in the destruction of natural food webs.

Explanation:

Increasing chemical industries near the river cause harmful effects to the environment by various means, including air pollution, dumping untreated chemical or industrial waste, and wastewater in the river. This will lead to a lack of potable water, contamination of the food chain, destruction of biodiversity, and many more.

The destruction of biodiversity can be caused by the increasing the unbridled growth of phytoplankton, eutrophication process that will consume more oxygen and cause algal bloom and decrease the oxygen in the water and destroys the organism and natural food web.

Which of these is not a human cause of extinction of species?
Choose the correct answer.


A) Clearing of an area for farmland.

B) A dam built in a river for city water usage.

C) Competition for food resources with another native species.

D) The introduction of a new predatory species to an island by boat.

Answers

The answer is A
_____________

The statement that does not represent a human cause of the extinction of species is the competition for food resources with another native species. Thus, the correct option for this question is C.

What is species?

Species may be characterized as a group or collection of organisms that can significantly reproduce with one another in nature in order to produce fertile offspring. The process of speciation is generally mediated through the species.

In the present time, the human causes of the extinction of species are majorly popular. It includes the clearance of an area for farmland and industrialization, the building of a dam for city water utilization, the introduction of a new predatory species to an island by boat, and many more.

But the process of competition for food resources with another native species is ultimately the behavior governed by the respective species itself without the interference of humans.

Therefore, the statement that does not represent a human cause of the extinction of species is the competition for food resources with another native species. Thus, the correct option for this question is C.

To learn more about Species extinction, refer to the link:

https://brainly.com/question/1027555

#SPJ6

What needs are not being met by a slow-moving or busy line at a school cafeteria? Identify the people, processes, and technologies that play a role in the issue you identified.

Answers

When you work in a School Lunch program, you’re bound to face challenges that pop up seemingly out of nowhere. That’s just the nature of serving hundreds or even thousands of students each day.

But, when you keep encountering the same Child Nutrition program problems, over and over, day after day, it’s likely more than just a coincidence.

Instead, there probably are bigger issues causing these problems.

The bad news is that it often can be unclear what these bigger issues are, which makes fixing them almost impossible.

The good news? We at Harris School Nutrition Solutions have spent thirty years working with the men and women of Child Nutrition programs all across the U.S., helping to diagnose and solve their School Lunch problems.

So, we figured we’d share with you some of the common school lunch-line challenges we’ve seen over the years, the real issues behind those challenges, and of course the solutions to both.

Chloroplasts do photosynthesis in which plant structure?
A. stem

B. leaves

C. roots

Answers

The answer will be b

What does it mean to ‘translate’ something? What is being translated in protein synthesis?

Answers

Answer:

Answer:

Translation is the process of translating the sequence of a messenger RNA  molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.

For a second i thought you meant to translate something to another language lol.

Explain and illustrate using chemical pathways how excessive alcohol intake can lead to; 1.Hypoglycemia

Answers

Answer: Alcohol can influence the blood sugar levels causing hypoglycemia.

Explanation:

Hypoglycemia is a condition in which the body experiences low blood sugar levels. Alcohol abuse can be one of the reasons for hypoglycemia. The occasional drinkers are affected negatively by this. It increases the secretion of insulin hormone which is a hormone necessary for keeping a balance of blood sugar levels in the body. The excess secretion of insulin can lead to decrease in blood sugar concentration and resulting in hypoglycemia. This can lead to type 1 diabetes.

Chromosomes contain all the genetic ________, all the instructions you need to make a person.

PLEASE HELP ITS BILL NYE VIDEO FILL IN THE BLNK

Answers

Answer:

Could the blank possibly be genetic code? Not really sure, but I think that it makes sense.

Most carbon dioxide is carried from the body tissues to the lungs _____. Most carbon dioxide is carried from the body tissues to the lungs _____. as bicarbonate ions (HCO3 -) combined with hemoglobin by the trachea as hydrogen ions (H ) dissolved in blood plasma

Answers

Answer:

As  bicarbonate ions

Explanation:

Answer:

it a

Explanation:

yw

Imagine that there is a loss-of-function mutation in the gene for the Notch receptor in the progenitor cell of C. elegans. How does that mutation affect vulva development

Answers

Answer:

Hello your question is incomplete attached below is the complete question

answer :  

None of the progenator cells differentiate into type 2 cells. ( A )

Explanation:

Due to the loss-of- function mutation in the gene for the Notch receptor in the progenitor cell of C elegans , This causes The progenator cells for type 1 to be  differentiated to type 1 cells but the cells for type 2 will not be differentiated.

hence the answer is  : None of the progenator cells differentiate into type 2 cells.

Other Questions
What is the constant of proportionality in the table below? .Four different cellular phone plans are shown below. Plan 1 charges $0.35 per minute with no monthly fee.Plan 2 charges a monthly fee of $10.00 plus $0.25 per minute. Plan 3 charges a monthly fee of $59.95 with 200 free minutes.Plan 4 charges a monthly fee of $15.00 plus $0.20 per minute.Which plan is the least expensive for 200 minutes of cellular phone use?.A. Plan 4B. Plan 3C. Plan 1OD. Plan 2 17.Which pair of numbers is relatively prime? *7 & 214 & 156 & 99 & 27 can someone please help me find the slope on khan academy? and please provide an explanation if possible "Peter promptly prepared the spicy peppers" is an example of... alliteration onomatopoeia hyperbole simile Please help I'll give brainliest 4. To promote diversity, companies actively seek and promote individuals in all of the following areasexcept1. educational levels.2.ages 3. Races 4. National origins Imagine something fantastic and begin to write a story about this subject using hyperbole and language that conveys mood. Be mindful of what kind of feeling or what sort of mood you want your readers to experience. Can anyone help with what the formula to calculate the volume of a Rhombohedron (3D Rhombus) is? Could you also give me an example of how to do it please? Match the term to its definition. (4 points)Column A1.Neap tide:Neap tide2.Spring tide:Spring tide3.Tidal bulges:Tidal bulges4.Tides:TidesColumn Ba.tide where there is the greatest difference between high and low water levelsb.the rise and fall of sea levels due to gravitational forcesc.tide where there is the least difference between high and low water levelsd.two ocean bulges created on opposite sides of Earth due to the moon's gravitational pull and the ocean's resistance to the pull What is so important about DNA? Select all correct answers.A. DNA is found in all organisms and carries instructions to build those organismsB. DNA found in one organism probably shares similar instructions found in another speciesC. DNA is composed of only four bases that repeat in a sequence that is different for eachspeciesD. Some organisms don't actually have DNAE. The DNA of each organism is made out of different types of chemicals How could Europe have changed so much between the Middle Ages and the Renaissance? 13. Melody was walking down the street and came upon the sweet aroma of burgers and fries. Which part of her body isresponsible for interpreting this information?a. Spinal Cordb. Nosec. Braind. Mouth Which sign makes the statement true?1.78 ? 0.88< or >???? I need number two only Oatmeal is packaged in a right circular cylindrical container that has a radius of 7 centimeters and a height of 16 centimeters.What is the surface area of this container in terms of pi?a. 176b. 254c. 322d. 440 Refer to the passage from "The Wise Fool.Further discussion seemed useless, and the meeting was just about to break up when the fool walked up and demanded to be heard. "Listen to me, he said. "The fairies say my mother should die. It is a fair punishment for her crime. But the fairies walked across my land as they came to the village. I demand that they rub out their footprints before they are allowed to take mother away. It seemed a foolish, meaningless demand, and everyone said, "How simple! The fairies agreed.At sundown the fairies were still working on the sandy plot. Two days went by. And a week. And another. Because just as one set of footprints were got rid of, another set appeared. By the end of the second week, in fact, the fairies had covered the entire plot with footprints. At last they gave up and let the woman live.What is the moral of the passage?It is unwise to make deals with fairies. It is impossible to erase all of ones footprints.There can be wisdom in an act that seems foolish.A punishment should be fair and based on the crime. Please see picture. Which statement must be true? Please answer the photo of the question below in 4 sentences!! :) Pls answer ASAP Ill give brainliest