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

What was the purpose of the Multiple Use Sustainable Yield Act?

To create standard expectations for various types of land use

To require companies to find several uses for any land they occupy

To designate any land that is home to endangered species as protected

To make sure that all aspects of a land’s use are considered in its management

Answers

Answer:

On June 12, 1960, Congress passed the Multiple Use-Sustained Yield Act, designed to prevent the obliteration of national forests by logging and water reclamation projects.

Explanation:

As the lock for the door opens you enter another room. This one has plain cement walls with huge silver and copper pipes running from floor to ceiling. The room reminds you of a basement mechanical room even though you have just gone upstairs. Everywhere there are old wooden crates and piles of gears of all sizes, springs, gages and the hands of old clocks. As you gaze around the door you just entered closes and will not open. (and even if it would you are not sure of what has happened to the Antique Dealer and maybe there is some danger that way.) Someone in the group checks their phone but there'is no signal. Maybe all this cement and metal is blocking your signal. Next to another door is an interesting framed collage made of miscellaneous gears and pieces.​

Answers

A safe room can be the difference between life and death during a home invasion. While a home security system is extremely important for immediately contacting law enforcement, a safe place for anyone inside to wait for the police is necessary. It can always be a great place to store valuables that you do not regularly use, like having

What factors do you think have contributed to the growing wolf populations?

Answers

ReproductionAbundance of preyReduction in hunting

Hope this helped, have a great day <3

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What does this table show?

Answers

Answer:

Calm down but i gotchu hope it works

Explanation:

This is the periodic table and it shows both the meatl and non metals in the periodic table also their atomic number and mass

Answer:

The table shows metals and non-metals

Explanation:

The yellow means metal and blue is non-metal. It also shows you where the atomic number and the mass number are on each element.

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What is the name of this table?

Answers

Answer: Periodic table

Explanation:

Answer: Periodic table of the elements

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends.

Name one process that helps to create unique cells during meiosis.

Answers

Answer:

Processes:

Explanation:

Prophase I, Prometaphase I, Metaphase I, Anaphase I, Telophase I and Cytokinesis, Prophase II, Prometaphase II, Metaphase II, Anaphase II, and finally, Telophase II and Cytokinesis.


Which of these pictures shows the karyotype of a female?
OA
both 1 and 2
B.
neither 1 or 2
C.
2
D.
1

Answers

I think 2 but I’m not 100% sure

Answer:

it's C (2)

Explanation:

Male chromosome are shorter than female, since male chromosomes are dominate number one will be a boy, and two is female.

Compare marshes, swamps, and bogs.​

Answers

Marshes, swamps, and bogs are all types of wetlands. This means that their soil can be saturated either permanently or seasonally. As wetlands, they are all characterized by high levels of biodiversity. Swamps tend to have a larger proportion of surface water than marshes and, in North America, are characterized by the presence of trees. Bogs have acidic groundwater as a result of their surface water resulting mainly from precipitation

Answer:

Marshes: Have extremely good ability to support grasses, reeds, flowers, and insects due to their high nutrient soil. They usually are around lakes/rivers/and other bodies of water. They are frequently covered in water however not always covered in water.

Swamps: Have extremely good ability to support wood like plants, trees. They are also permanently covered/submerged in water all year around.

Bogs: Basically they are a gravesite of a dead plant life. When a lake fails to support itself it turns into a bog, its plant life dies off and will start rising to the top creating almost a film. However even though the plant life dies the insects, reptiles, and Amphibians thrive.

Explanation:

Hope this helps!

Jesssica is blood type A and her husband Graham is blood type O. She is worried because they are pregnant and their future child has a rare disorder which will require him to need regular blood transfusions. Jessica worries that if their son ends up with type O blood, like his father, it will be hard to get the necessary regular blood transfusions because people with O blood can only accept O blood. What is the likelihood of their child having blood type O?

Answers

Answer:

- 50% probability if Jessica has genotype "iAi"

- 0% probability if Jessica has genotype "iAiA"

Explanation:

Blood group in humans is controlled by multiple alleles namely; iA, iB and i. iA and iB are codominant but both dominant over i. The following blood types and their respective genotypes are possible;

- Type A: iAiA or iAi

- Type B: iBiB or iBi

- Type AB: iAiB

- Type O: ii

According to this question, Jessica is blood type A (iAiA or iAi) and her husband Graham is blood type O (ii).

- If Jessica has a genotype iAi, the probability that they will give birth to a child with blood type O (ii) is 50% (see punnet square)

- If Jessica has a genotype iAiA, the probability that they will give birth to a child with blood type O (ii) is 0% (see punnet square).

Provide two reasons why it is important to isolate undigested plant cells.
I need this asap

Answers

Answer:

It helps to support growth and helps producing energy to do vital functions.

Hope this helps!

A reliable DNA analysis is based on the DNA conditions. The importance of using undigested cells is that DNA is well-preserved, not affected by external factors, and can be used to compare it to database sequences.

------------------------------------------

Dr. Pringle studies niche partitioning and competition reduction among coexistent species in Africa.

He is interested in knowing the exact source of food of different herbivorous species. To do so, he is using the technique of DNA metabarcoding.

He collects fresh animals' dung and gets the indigested plant cells.

DNA is isolated, sequenced, and compared with the DNI of known species, which are a potential source of food for these animals.

Once he matches the cells' DNA with the corresponding plant species from the database, he can use this information to detail the animal's source of food.

The importance of getting fresh, undigested cells from the dung, is that

The animal's digestive enzymes have not broken the cell walls and digested the cell content. The dung environmental conditions such as pH, temperature, or microbiota have not affected the cell's DNA. Undigested cells' DNA is well-preserved and can be used to compare it with the plant species database.

------------------------------------------------------

Related link: https://brainly.com/question/19670710?referrer=searchResults

                    https://brainly.com/question/15195300?referrer=searchResults

What elements makes up a glucose molecule?

Answers

Answer:

Carbon, Hydrogen, Oxygen

Explanation:

Mention two ways in which plants are useful to animals and vice versa​

Answers

Answer:

1.All animals depends on plants for their food and medicine

2.Plants gives animals oxygen which is essential for environment and animals for their survival.

Explanation:

Plants are useful to animal as they provide them food, medicines , timber etc. Animals help plants by dispersing their seeds which further help in plantation of new plants. Also, some plants like Pitcher plant eat small animals or insects to gain nutrition from them.

What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?
O 0.5 s
o 25
100 s
200.000 s

Answers

Answer: 0.5 s

Explanation: speed = wavelength · frequency and period T = 1/ frequency.

Frequency = speed / wavelength = 200 m/s : 100 m = 2 s^-1 and T = 0.5 s

at what condition a new queen bee is produced in a hive​

Answers

Three main conditions - when the colony wants to swarm, when the colony wants to supersede its queen, and when its queen has died.

1+3×3÷31+3÷2×3123455​

Answers

Answer: 5188965.565

Explanation:

Complete the following sentence.
_______ disease is a common type of dementia that causes problems with short-term memory and daily living.

Answers

Answer:

Alzheimer's

Hope this helps!

a 30 rock cut cave monuments famous for its murals



Ineeditnow​

Answers

Answer:

Ajanta Caves

Explanation:

Need help with the following !

Answers

1. DNA stands for: Deoxyribonucleic acid
2. Every single GENOME has an organisms entire DNA
3. I dont know 3 sorry
4. DNA is made of Nucleotides
5. Phosphate group and a nitrogen base
6 4 bases: adenine, thymine, cytosine, and guanine.
7. Thymine to Tree and Cars in cytosine

Many different types of mutations can occur within the body. Cystic fibrosis is a genetic disorder that is caused by different mutations within the CFTR gene. One mutation in the CFTR gene that leads to cystic fibrosis causes translation to end earlier in the gene sequence. Which type of mutation causes this translation error that leads to cystic fibrosis?

Answers

Answer:

The type of mutation that causes this translation error is called deletion. Deletion occurs when a section of a DNA is deleted or lost. In cystic fibrosis, three nucleotides are deleted that results in the lost of phenylalanine

dose ever person have a DNA or not and why

Answers

Answer:

everyone has dna becasue our dna tells us to do things

Explanation:

name the living matter of the cell.​

Answers

The cytoplasm and the nucleus together are known as the protoplasm, the living matter of the cell.

The primers you used in lab amplified 145 base pairs that were adjacent, but not included in the repeat. If you used a different primer that only amplified 130 base pairs adjacent to a 14 base pair repeat, and you had 4 repeats in your product, what was the size of your final PCR product?

186

214

158

200

172

Answers

Answer:

186

Explanation:

The Polymerase Chain Reaction (PCR) is a technique used in molecular biology to amplify small segments of DNA. This technique uses a pair of oligonucleotide sequences called 'primers' which bind to opposite strands of the heat-denatured DNA template in order to amplify this target DNA sequence. In this case, the DNA template is composed of a single unit of 130 base pairs (bp) and four repetitive units of 14 bp, so the final PCR product will have 186 bp >>> 130  bp + (14 bp x 4) = 130 + 56 = 186.


Commonly found fossils are of the ______ type.

A. print
B. petrified
C. carbonized

Please help, ASAP.

Answers

Answer:

C. carbonized

Explanation:

The mode of fossilization of these inclusions varies, but carbonization is most common.

which statement best describes a cause and its effect during the process or muscle contraction?​

Answers

Answer. The most appropriate statement that is explaining the effect and cause during muscle contraction is. “The release of calcium ions causes myosin and actin to attach to each other.” The activation of muscles helps in the generation of muscles that send out the signals to the neurons.

hope this helps

6. Which of the following is true during telophase?
a. The nuclear membrane has disappeared.
b. The cell membrane begins to form cleavage furrow at the center.
C. Two new cells are formed with the same number of chromosomes as the parent cell.
d. The centromere of each chromosome divides and pulls them by the spindle fibers toward
the end of the cell.

Answers

Explanation:

what is the name of this website or the book

Any change in the Relative Frequency of alleles in a population is:

Controlled by more than 2 genes

Controlled by a single gene

The gene pool

Evolution

Answers

It’s hard brother! Pool

explain why the blood of an insect does not contain respiratory pigments​

Answers

Answer:

Explanation: Respiratory pigments like haemoglobin, haemocyani, are needed for transport of respiratory gasses. In insects there is no such pigment in blood, because oxygen is directly delivered to cells by trachea!

I hope I helped u!

Which of the following is NOT one of the 4 bases in DNA?
1)Adenine
2)Thymine
3)Automine
4) Guanine

Answers

Answer:

3) Automine

Explanation:

Adenine, thymine, cytosine and guanine are the four nucleotides found in DNA.

So automine watev that is correct

I was thinking B but I need another opinion.


NO LINKS AND IF YOU DO YOU WILL GET REPORTED​

Answers

Answer:

YES YOU WERE RIGHT B MAKES SENSE

Explanation:

Answer:

B) 1 and 2

Explanation:

Both 1 and 2 are true in the actual Solar System. Number 3 is incorrect because Earth is only tilted at a 23.5 degree angle. Number 4 would make a oval or other shaped orbit, so it's incorrect.

Hope it helps!!!

Read God's rules of health and sanitation for Israel in

Lev. 11:1-8 and Deut. 23:12-14. How might these

rules have protected His people from diseases such as

those caused by parasitic worms? Relate your answer

to the mode of transmission of many parasitic worms.

Answers

Answer:

It is transmitted in the body through contaminated food.

Explanation:

These  rules of God's about health and sanitation have protected Israeli people from diseases which was caused by parasitic worms because these parasitic worms entered the body by not washing hands and contaminated food. These parasitic worms are present on the skin as well as in the food so the person can save itself from these parasitic worms if he or she wash hands properly before eating the meal and eat clean, fresh and healthy food.

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