Why is there a limit to the number of levels that a food chain can reach?

Answers

Answer 1
I think the answer is 5?

Related Questions

Chemosynthesis _______. Question 11 options: uses energy derived from hydrocarbons and hydrogen sulfide in place of solar energy produces carbohydrates and sugars occurs around hydrothermal vents near the oceanic ridge system Both a and c are correct. All of the above are correct.

Answers

Answer:

The answer is all of the above are correct.

Explanation:

Chemosynthesis occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce food. All chemosynthetic organisms use energy released by chemical reactions to make a sugar, but different species use different pathways. For example, at hydrothermal vents, bacteria oxidize hydrogen sulfide and add carbon dioxide and oxygen to produce sugar, sulfur, and water:  

CO2 + 4H2S + O2 ⇒ CH20 + 4S + 3H2O.

Chemosynthesis is the process by which food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight. Chemosynthesis occurs around hydrothermal vents and methane seeps in the deep sea where sunlight is absent. During chemosynthesis, bacteria living on the seafloor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in seawater). Pure sulfur and sulfur compounds are produced as by-products.

Briefly explain what happens during Meosis 1.

Answers

Answer:

Explanation:

During meiosis one cell, divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes of the parent cell.  they are haploid. Meiosis produces our sex cells or gametes. (eggs in females and sperm in males)

A study is done on a group of families in Sweden that are segregating a genetic disorder. A statistical estimate of whether two genes, or a gene and a disease gene, are likely to be located near each other on a chromosome (called Lod-score analysis) indicates that the gene involved in the disorder shows a strong likelihood of linkage with a particular DNA marker locus. However, a second study done in Italy with other families segregating the same genetic disorder results in lod-score values that strongly indicate the lack of linkage between the gene and the same DNA marker locus. Assuming that both studies were performed appropriately, what is the most likely explanation for the different outcomes

Answers

Answer:

This disorder is caused by mutations in either of two different genes; one of these genes is linked to the DNA marker locus and the other gene is not.

Explanation:

A gene marker (also known as a molecular marker) is defined as a particular DNA sequence that has a specific physical location on a given chromosome. The gene markers are always physically linked with genes of interest, thereby they are useful for identifying patients affected by a given disease and/or a particular phenotypic trait. In this case, in the first study, genetic variation of the marker has been shown to be useful to map one locus that is associated with the disease phenotype. However, in the second study, a second locus that is not linked to the marker can segregate independently, thereby showing different results from the first study (in this case, it is imperative to develop a new genetic linkage analysis to discover genetic markers linked to the second gene, which is also responsible for the disease phenotype).

During respiration, carbon dioxide diffuses from the blood across the alveolus and into the lungs. Which factor increases the diffusion rate of carbon dioxide?

Answers

Explanation:

There are some factors which affect the rate of diffusion. These are:-

The partial pressure of oxygen.

The partial pressure of carbon dioxide.

Temperature.

The concentration of gases.

The thickness of the membrane.

hope this helps you

have a nice day :)

Answer:

the thickness of membrane

Within the Phylum Mollusca, what is the
radula?
A. the organ that grinds up food before digestion
B. the organ that turns into the shell of the animals
C. the organ that circulates blood through the organism

Answers

Answer:

I think the ans is no.a ok

please mark as brainliest

Which of the following is a heterotroph?
*cyanobacteria
*gopher
*fir tree
*dandelion

Answers

Correct Answer is gopher

Which of the following is formed when a group of tissues works together to preform a common function
A. Body
B. Organ
C. Brain
D. Organ system

Answers

B organ
Hope you like that
B. Organ

An organ is a structure made up of two or more tissues that work together to carry out a specific job.

Which commercial fishing technique is associated with excessive bycatch?
O A. Long-line fishing
O B. Handline fishing
O C. Trolling
O D. Seining
HELP

Answers

Answer: D. Seining

Explanation:

Seine fishing refers to a method of fishing whereby a fishing net, which is referred to as a seine, is hanged vertically in the water.

Seining is typically done in water that is less than 12 feet in depth and it works well when the aquatic plants and the algae doesn't disturb the water. In the seining method, a large net on two poles is used and it's a commercial fishing technique is associated with excessive bycatch.

Answer:

Long line fishing

Explanation:

It gathers more than seining

List three of water’s unique properties.

Answers

Explanation:

1.water is called universal solvent it can dissolve almost every solute on it

2.water can show anamolus expansion which mean it density will me most on 4 degree celsius

3.it is neutral substance

universal solvent, water cane expand, neutral substance

(ii) Fish use their gills as a gas exchange surface.
Suggest three ways in which fish gills are adapted for efficient gas exchange.
(3)
1
2
3

Answers

Exchange of gases in fish is very efficient because of: the large surface area of the gills. the large surface area of the blood capillaries in each gill filament. the short distance required for diffusion – the outer layer of the gill filaments and the capillary walls are just one cell thick.

Since the reason of the large surface area of the gills, gas exchange in fish is very efficient. the blood capillaries' large surface area in each gill filament The outer layer of the gill filaments as well as the capillary walls are only one cell thick due to the short distance required for diffusion.

What are gills?

A gill is a respiratory organ found in many aquatic organisms that allows them to extract dissolved oxygen from water and expel carbon dioxide.

Some species' gills, such as hermit crabs, have adapted to allow them to breathe on land as long as they are kept moist.

Water runs over the gills as the fish opens its mouth, and blood in the capillaries picks up oxygen dissolved in the water. The blood then circulates through the fish's body to deliver oxygen, just as it does in humans.

Fish have gills, which allow them to "breathe" oxygen from the water. Water enters the mouth, travels through the gills, and exits the body via a special opening.

As the water passes over them, the gills absorb oxygen from it. The body of a fish is stream-lined.

Thus, these are the ways, in which fish gills are adapted for efficient gas exchange.

For more details regarding gills, visit:

https://brainly.com/question/14793690

#SPJ2

Organizing a higher trophic levels tend to be fewer in number than those at lower tropic levels (true or false?

Answers

Answer:

True

Explanation:

the drug which is used to reduce pain is ..,....

i) opium ii) bhang iii) hashish iv) marijauna​

Answers

Answer:

hashish

Explanation:

opinum

Explanation:

because it is used to make pain nubbing/pain killer

Select the correct answer.
Why do plants excrete more carbon dioxide at night than during the day?
A.
Cellular respiration occurs only at night and not during the day.
B.
Cellular respiration occurs at a faster rate at night than during the day.
C.
Photosynthesis uses some of the carbon dioxide released during the day.
D.
The light-independent reaction of photosynthesis that releases carbon dioxide occurs at night.

Answers

Answer:

D

Explanation:

because they cannot do photosynthesis at night.

Answer:

The answer is C. Photosynthesis uses some of the carbon dioxide released during the day.

Explanation:

your body's internal feedback loops work by responding to???

A) information from the external environment

B) hormones from the pineal gland

C) changes in the internal environment

D) messages sent by the brain to body organs

Answers

Answer:

Option C

Explanation:

__________ will increase soil nitrates, while ___________ will decrease soil nitrates.
A. Fast growing crops, heavy rains
B. Decomposers, lightning
C. Animal manure, fast growing crops
D. Denitrifying bacteria, Nitrifying bacteria

Answers

Answer:

A. Fast growing crops, heavy rains

Explanation:

Fast growing crops will increase soil nitrates, while heavy rains will decrease soil nitrates.

Animal manure has organic waste containing nitrogen that acts as a source of nitrate in the soil and growing crops absorb nitrate from the soil. Thus option C is correct.

What is nitrate?

Nitrate is an organic compound of nitrogen that is present in the fertile soil and absorbed by the plants. The Source of nitrate is humus and fertilizer. Humus is obtained from animal manure, and dead and decaying animal and plant bodies.

Fast-growing crops absorb the nitrate from the soil and use it for development and growth such that nitrate decrese in soil. So option C is correct.

Learn more about nitrate, here:

https://brainly.com/question/1615727

#SPJ5

What organelle must be present for a cell to be classified as eukaryotic?

nucleus

chromosomes

chloroplasts

ribosomes

Answers

Nucleus
Hope this helps *smiles*
The answer is nucleus.

Which of these is an example of an adaptive )or specific) immune response

Answers

Adaptive immunity is defined by two important characteristics: specificity and memory. Specificity refers to the adaptive immune system's ability to target specific pathogens, and memory refers to its ability to quickly respond to pathogens to which it has previously been exposed.
___IgD: B. This class of antibody is the first to appear after activation of B cells
___IgM: E. This class of antibody is not secreted by B cells but is expressed on the s...
___IgE: C. This class of antibody is involved in the defense against parasitic infections ...
___IgA: A. This class of antibody is the only one that can cross the placenta

What is the process in genetic expression?

Answers

Answer:

Explanation:

Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. It acts as both an on/off switch to control when proteins are made and also a volume control that increases or decreases the amount of proteins made.

Help please asap help me

Answers

Answer: cells, chlorophyll, nucleus, chromosomes, organelles, interphase, endoplasmic

What questions do you have about skin and skin color?

Answers

Answer:

nothing I have☺️☺️☺️☺️☺️☺️☺️☺️☺️

How is an RNA molecule different from a DNA molecule?

RNA is single stranded and composed of nitrogenous bases, a phosphate group, and a pentose sugar.
RNA is single stranded and composed of nitrogenous bases, a phosphate group, and a tetrose sugar.
RNA is a double-stranded helix and composed of nitrogenous bases, a fatty acid, and a pentose sugar.
RNA is single stranded and composed of nitrogenous bases, an amino acid, and a hexose sugar.

Answers

Answer:

RNA is single-stranded and composed of nitrogenous bases, a phosphate group, and pentose sugar.

Explanation:

RNA is different from DNA because instead of having two matching bases; it is only made of one strand of nitrogenous bases. These bases are attached to the phosphate, which holds the whole strand of RNA together. The sugar acts as a carrier for the bases. The sugar in RNA is known as ribose and contains 5 carbon molecules. This is why it is called pentose sugar.

Which of the following diseases is not caused by viruses?

Measles
Chickenpox
AIDS
Malaria

Answers

Answer:

malaria isn't caused by bacteria

Which of the following is a normal process of photosynthesis that could not occur if all reaction centers were inactivated by a toxin?
A. donation of excited electrons by chlorophyll a to a primary electron acceptor
B. absorption of photons by chlorophyll b
C. absorption of photons by carotenoids
D. donation of excited electrons by chlorophyll b to a primary electron acceptor

Answers

Answer:

A. donation of excited electrons by chlorophyll a to a primary electron acceptor

Explanation:

Photosystems are structures located at the thylakoid membrane that act to harvest energy light in order to convert it into chemical energy. Each photosystem is composed of a light-harvesting complex and a core complex, which in turn is composed of a reaction center. The photosynthetic reaction centers are multi-protein complexes that use light energy to catalyze the electron transfer across the chloroplast thylakoid membrane against a thermodynamic gradient. Moreover, antenna pigments are pigments that capture the energy from photons in order to transfer energy to other pigments in the photosystem (e.g., chlorophyll B and carotenes are antenna pigments, whereas chlorophyll A is the core pigment). Light energy absorbed by antenna pigments in the photosystems is transferred to the reaction center chlorophyll A molecules, thereby exiting electrons in the reaction center. A reaction center consists of two chlorophyll A molecules, which donate electrons to the primary electron acceptor.

How do the frequencies of the waves compare?

Wave A has a higher frequency because it has a larger amplitude.
Wave A has a lower frequency because it has a longer wavelength.
The waves have the same frequency because they have the same wavelength.
The waves have the same frequency because they have the same amplitude.

Answers

Answer:

The waves have the same frequency because they have the same amplitude.

external structure of Amoeba​

Answers

Answer:

Structure of amoeba primarily encompasses 3 parts – the cytoplasm, plasma membrane and the nucleus. The cytoplasm can be differentiated into 2 layers – the outer ectoplasm and the inner endoplasm. The plasma membrane is a very thin, double-layered membrane composed of protein and lipid molecules.

Explanation:

Identify the incorrect statement regarding the fundamental causes of edema. Multiple Choice Capillary reabsorption does not depend on oncotic pressure. A deficiency of albumin (hypoproteinemia) produces edema by reducing the reabsorption of tissue fluid. Kidney failure leads to water retention and hypertension, thus raising capillary blood pressure and filtration rate. Obstruction of lymphatic vessels can interfere with fluid drainage and lead to the accumulation of tissue fluid distal to the obstruction. Since albumin is produced by the liver, liver diseases, such as cirrhosis, tend to lead to hypoproteinemia and edema.

Answers

Answer:

Capillary reabsorption does not depend on oncotic pressure

Explanation:

Edema refers to the swelling caused by the fluids trapped in the body's tissues, which swell from injury and/or inflammation. Edema can be associated with the decrease in plasma oncotic pressure, i.e., osmotic pressure exerted by proteins (especially albumin) in the blood vessel's plasma, the increase in hydrostatic pressure, or the increase in the capillary permeability. Moreover, capillary reabsorption refers to the movement of fluid from interstitial space to the capillaries, which is driven by the blood colloidal osmotic pressure. Lymphatic obstruction, i.e., the blockage of the lymph vessels that drain fluids from tissues, may cause edema in the part that is drained by the affected vessels (it is known as lymphedema). Moreover, liver/kidney failure may lead to edema by decreasing albumin and oncotic pressure. When plasma albumin levels drop because of liver diseases, the colloid osmotic pressure also decreases. In consequence, liver diseases, including stage 3 cirrhosis, lead to the development of swelling in the abdomen, thereby leading to edema.

What cycle of replication is used by the common cold virus?
A: Dormant cycle
B: Replication cycle
C: Lytic cycle
D: Lysogenic cycle

Answers

Answer:

C

Explanation:

The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.

The common cold virus is replicated using the lytic cycle, by introducing its genome into the host and using its cellular machinery, hence option c is correct.

How common cold virus replicate?

The common cold virus is replicated by using the lytic cycle, in which the virus introduces its genome into the host genome and uses all the replicating machinery of the virus.

The lysogenic cycle is different from the lytic cycle in which the viral genome replicates on its own and does not integrate its genome into the host genome.

After replicating its genome with the host genome, the viral genome is excised from the host genome and assembled into new viral particles for infecting other host cells. The new viral particle lysed the host cell and spread to other cells.

Therefore lytic cycle is used by the common cold virus, hence option c is correct.

Learn more about replication in common cold virus, here:

https://brainly.com/question/12785874

#SPJ2

Complete the table by filling in the missing information. Use these choices:

frameshift
substitution


7. UGU-CCG-GAA-CGA

UGC-CGG-GAA-CGA

8. GAA-CGU-AGC-GGU

GAU-CGU-AGC-GGU

9. UGU-UUC-CCU-UAA

UGU-UCC-CUU-AA

Answers

Answer:

7. Substitution mutation

8. Substitution mutation

9. Frameshift mutation

Explanation:

A substitution mutation is any kind of mutation that involves replacement of one or more nucleotide base by another in a sequence.

A frameshift mutation, on the other hand, is a mutation that changes the reading frame of the sequence. Two types of mutations cause frameshift viz: insertion and deletion mutation.

In the following sequences, mutation has occured as follows:

7. UGU-CCG-GAA-CGA to UGC-CGG-GAA-CGA - Substitution mutation has occured because nucleotides C and G has replaced C and U in the first and second codons respectively.

8. GAA-CGU-AGC-GGU to GAU-CGU-AGC-GGU- A substitution mutation because nucleotide U has replaced A in the first codon.

9. UGU-UUC-CCU-UAA to UGU-UCC-CUU-AA - A frameshift mutation because nucleotide U has been removed from the second codon, hence, causing a change in the reading frame.

Neurons are best described as:

Answers

Answer:

neutral?

Explanation:

What do you mean by photosynthesis?


bore D D D D ​

Answers

Answer:

photosynthesis is the process in which plant make food by themselves from using sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Answer:

Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's metabolic processes through cellular respiration.

OAmalOHopeO :)

Other Questions
A scientist bred fruit flies in two separate containers with different food sources for many generations. When she put the fruit flies from the two containers together again, she observed that the flies preferred mates raised on the same food. Which conclusion can the scientists draw? what is the significance of classifying people in Germany as " without citizenship rights " if you can speak. you can influence. if you can influence. you can change lives. how many different versions of a gene are carried in a single normal cell? What is said to have happened to the electrons in an atom in its ground state absorbs a quantum of energy from light The starting line up for a basketball team is to consist of two forwards and three guards. Two brothers are on the team. Matthew is a forward and Tony a guard. There are four forwards and six guards from which to choose the line up. If the starting players are chosen at random, what is the probability that the two brothers will end up in the starting line up List some of the rights listed in the document you chose in part A that are not mentioned in the other document. Pythagorean TheoremThe diagram shows square 1, 2, and constructed on the sides of righttriangle31 2Which statement about the squares must be true? _+3=-9 pls help I will give branlyiest Which of these are part of the CPU?O peripheralO HDMI cordO coreO keyboard the train regularly travels 135 miles in 60 minutes.What is the speed, in miles per minute, on this portion of the route? The price of a litre of milk increased from $1.25 in 2004 to $1.35 in 2006. What is the average price increase per year? Identify the most important reason that the election of 1896 was significant in American politics. Voters settled the question of how many immigrants would be admitted to the country on an annual basis. The Democratic, Republican and Populist Parties all gained strength as independent political entities. Both presidential candidates traveled and gave public speeches during the campaign. One party used corporate campaign donations to hire speakers and print literature to discredit the opponent. "Infrastructure of development are not developed as per the expectations in nepal". Write any 4 cause of it . Planes T and X are parallel. Plane T contains line a. Plane X contains line b. Planes T and X are parallel. Plane T contains line a and plane X contains line b. Which best explains the relationship between lines a and b? They are skew and will never intersect. They are parallel and will never intersect. They are perpendicular and will intersect. They will intersect at two points. What was the first private radio in Ghana? Give the physical test in each components of physical: fitness. (ex Muscular strength : push up what is the mean of this graph? Please help me from 1 to 24 1..... little brother was playing the guitar when ..came home yesterday.A.My/IB.Mine/IC.I/ID.My/me