Which best summarizes the concept of natural selection?

Answers

Answer 1

Answer:

The fittest organism survive and produce.


Related Questions

is a general condition when an organism gains or loses one or more chromosomes but not a complete set. 2. is a general condition where complete haploid sets of chromosomes are present. 3. is a loss of one chromosome from an otherwise diploid genome. 4. is a gain of one chromosome in addition to an otherwise diploid genome. 5. is a trisomy of chromosome 13 in humans. 6. is a trisomy of chromosome 18 in humans. 7. is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species. 8. is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.

Answers

Answer:

The correct term for each description s given below:

Explanation:

1. aneuploidy - is a general condition when an organism gains or loses one or more chromosomes but not a complete set.

2. Euploidy - is a general condition where complete haploid sets of chromosomes are present.

3. Monosomy- is a loss of one chromosome from an otherwise diploid genome.

4. Trisomy- is a gain of one chromosome in addition to an otherwise diploid genome.

5. Patau syndrome -is a trisomy of chromosome 13 in humans.

6. Edwards syndrome -is a trisomy of chromosome 18 in humans.

7. autopolyploidy -is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species.

8. allopolyploidy - is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.

A nonnative species of squirrel is introduced into a forest. Which would most likely prevent this squirrel from becoming an invasive species?

A. There are no natural predators for the squirrel in this ecosystem.

B. The squirrel must compete with stronger organisms for resources.

C. The forest ecosystem has very low biodiversity.

D. The squirrel is able to reproduce quickly in this ecosystem.

Answers

Answer:

B

Explanation:

competing with stronger organisms makes it difficult for the squirrel to be invasive

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If a nonnative species of squirrel is introduced into a forest, one of the things that can prevent it from reaching an invasive status is if the squirrel competes with stronger organisms for resources.

Competition is one of the factors that limit the growth of organisms' populations.

All other factors being equal, a combination of some of the following will make the squirrel attain an invasive status:

The absence of natural predators means that the squirrel's population is not threatened in any way.Low biodiversity in the forest ecosystem means that the squirrel will experience very little to no competition for resourcesReproducing quickly in the ecosystem means that the population will boom in no time.

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Help!!!! :( please !

Answers

Answer:

1. May

2. September

3. February and December

4. 42°F

Explanation:

Reviewing the given data for the weather of Alexandria, Virginia as shown in the data set attached, we have the following:

1. The month with the most precipitation is MAY (3.99 on average)

2. SEPTEMBERhas a record low of 36° F

3. FEB. and DEC both have an average high of 47°F

4. Difference in °F between record high and record low in October = 68°F - 26°F = 42°F

Which correctly lists three main causes of deforestation? air pollution, mining, logging mining, cattle ranching, logging cattle ranching, water pollution, air pollution water pollution, logging, mining

Answers

Answer:

The other guy was wrong!

The actual answer is B. or Mining, cattle ranching, logging.

I got this right on edge 2021!!!

Hope this helps!!!

Please give brailiest!!!

Answer:

B) Mining, cattle ranching, and logging.

Explanation:

All I know is that logging causes deforestation which is very destructive. The other guy is correct

HELPPP ASAP

Sound waves move the fastest through which medium?
O water at high temperatures
O water at low temperatures
O air at high temperatures
air at low temperatures

Answers

Answer:

Sound waves move the fastest though water at high temperatures.

Explanation:

Answer:

A

Explanation: just did quiz

How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biosphere, and geosphere all at the same time? (Site 1 )

Answers

Plants take the CO2 from the atmosphere which is used in Calvin's cycle to synthesize organic compounds that end up building the plant. This fact can be proved by marking the atmospheric CO2 with radioactive isotopes of carbon, afterwards using a Geiger counter the plant will present radioactivity.

The carbon in the atmosphere is most commonly found in the form of CO2

it has a concentration of 0.04%.CO2 is a byproduct of aerobic respiration

or combustion, for example, C6H12O6+6O2-->6CO2+6H2O. The CO2 is then used by plants in photosynthesis as mentioned earlier.

Carbon is present in the biosphere because all life is made of carbon.

Carbon is present in the geosphere most commonly under the form of hydrocarbons like methane(CH4). The carbon present in geosphere is a result of organisms decay and metabolic byproducts. For example, methanogen bacteria synthesize methane in anaerobic conditions reducing hydrogen in the presence of CO2(CO2+4H2⇒CH4+2H2O). Carbon in the geosphere can also be found in coal that becomes diamond under extreme pressure and temperature.

Carbon element exists in various parts of the atmosphere in the form of gases such as carbon dioxide. The growth of land plants proof that there is carbon in the atmosphere as they perform photosynthesis.

What is Atmospheric carbon?

The atmospheric carbon refers to the carbon dioxide which is present in the atmosphere. The main source of this carbon dioxide is respiration in animals.

There is an exchange of carbon from the atmosphere, vegetation, soils and the organic matter of the atmosphere, ocean and fossil fuels all of these are continually changing. The carbon cycle is the cycle through which carbon is exchanged among the various parts of the globe that is the biosphere, geosphere, and atmosphere of the Earth.

The growth of land plants is a proof that there is carbon present in the atmosphere because the land plants use carbon dioxide and water to grow. Carbon dioxide and water are both the gases and important part of the atmosphere, so when they are combined they usually form a liquid. This liquid is then absorbed by the plants and they use it to make their own food through photosynthesis.

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Self testing is an important step in the immune system because it
increases the lethality of B-cells.
increases the lethality of T-cells.
eliminates all lymphocytes that have been built that would bind and kill healthy, unaffected body cells.

Answers

Answer:

The correct answer is - eliminates all lymphocytes that have been built that would bind and kill healthy, unaffected body cells.

Explanation:

Self-testing in the immune system is a very important step as it helps in analyzing if the immune cells or lymphocytes. To fight against the intruders, the immune system should initially recognize them. That is, the immune system must have the option to recognize what is nonself (remote) based on what is self. The immune system can make this identification since all cells have distinguishing recognition molecules (antigens) on their surface.

Self-test helps in identifying and eliminate in all lymphocytes that have built and attack the healthy cells and killing them.

what two things warm water

Answers

Answer:

To put it on heat it can warm water.

Explanation:

Answer:

Boiler and a kettle

Explanation:

I



Which equation has water as a product in the chemical reaction?

Answers

Answer:

What are the options? If I had to guess NaOH+H2 Na+H2O

Explanation:

Answer:

B. NaOH + -> Na + H2O

Explanation:

Research wolff's law. how does the formation of torus mandibularis relate to this theory?

Answers

Answer:

According to wolff (German Anatomist and Surgeon),the adaptation shown by a  bone in an  healthy animal or human depends on the loads it bear.Therefore, changes in the structure or type  load the bone bears, will lead to a corresponding change in the bone bearing the load.A practical example is the development of the bone in hand used by a professional tennis player to hold racket.The bones of this hand usually appear stronger and well developed  than the other hand.

When a bony outgrowth, emerges in the mandible close to the surface of the tongue, this outgrowth is called Torus mandibularis. It is commonly found near the premolars, in a bilateral conditions. It is common among the Asian and the indigenous people of  Canada, Greenland and Alaska(the Inuit).

If it is caused by bruxism (teeth grinding)This will create stress on the impacted bone.Therefore based on Wolff's theory, the impact of this  local stress,(teeth grinding) may cause transformation in the shape of the part of the mandible associated with the teeth,an therefore leads to  the  bony outgrowth.

This theory may also be interpreted  with Lamarck theory  of use and disuse.

The formation of the torus mandibularis relates to this theory - this bone help in adapt the extra stress by grinding teeth.

Wolff's law

This law states that if a bone is under continuous stress or load, then internal as well as external structural changes would take place in the bone that helps to adapt the bone to bear increased mechanical stress.

Torus mandibularis is a bony extension near the base of the tongue. Due to the continuous grinding of teeth the load on the underlying bone increases. Torus mandibularis helps to cope with extra stress caused due to grinding of teeth.

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the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall

Answers

Answer:

answer is alveolar wall

Answer:

Option A

Explanation:

Alveolar Wall forms the main respiratory surface where exchange of gass happens.

What is the Hepatic Portal Vein?​

Answers

Answer: The hepatic portal vein is one of the most important vein that receives blood from the body and transports it into the liver for filtration and processing. This vein is part of the hepatic portal system that receives all of the blood draining from the abdominal digestive tract, as well as from the pancreas, gallbladder, and spleen.

‘Hepatic’ means of or relating to the liver, therefore the hepatic portal vein is a blood vessel that sends nutrient-rich blood from the gastrointestinal tract and spleen to the liver, but also delivers toxins to the liver that will be chemically modified in the proces of detoxication

Answer:

Explanation:

hepatic portal vein is located in the upper right quadrant of the abdomen. It is typically 8 centimeters long in adults. The portal vein is responsible for carrying blood from the GI tract, gallbladder, pancreas, and spleen to the liver.The hepatic portal vein originates behind the neck of the pancreas and is usually formed by the convergence of the superior mesenteric vein and the splenic vein, referred to as the splenic-mesenteric confluence.

Which types of measurement are used to describe quantities of heat and temperature ?

Answers

Answer:

There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.

Explanation:

Hope this helps you!

Which best describes the scientific process?
A. A guess about a scientific idea
B. A group of scientists
C. A type of mathematics
D. A way to answer scientific questions
SUBMIT

Answers

Answer: I thinks it’s a.  A guess about a scientific idea

Explanation:

which describes one of oxygen's roles in Earth's atmosphere

Answers

Answer:

Oxygen: Oxygen is one of the essential gases for the living beings to survive. The plants produce oxygen as a result of photosynthesis and it has a wide range of role in Earth's atmosphere. Roles: Allows fuels to burn - Oxygen is the reason for combustion. Hope this helps :))

Explanation:

Answer:a on edg

Explanation:

Pollen grains help scientist

Answers

Answer:

true

Explanation:

Pollen grains help scientists identify plants and make assumptions on past climate conditions. understand tree growth and make assumptions on past climate conditions.

Answer:

A

identify plants and make assumptions on past climate conditions.

Scientists hypothesize that oxygen began to accumulate in Earth’s atmosphere after the appearance of living things with the ability to

Answers

Answer:release carbon emissions

Explanation:

which of the following best describes the process of conjunction​

Answers

Answer:

there is not any options given..

Explanation:

but conjuction is a noun.it joining together elements..

for an example i can both play volleyball and football ...

hope this help you.

1 Point
Salmon feed on shrimp, and humans eat salmon. Which role do both shrimp
and salmon play in this situation?
A. Host
B. Prey
C. Predator
D. Parasite

Answers

Answer: B. Prey

Explanation:

The shrimp is the prey (or food) of the salmon and the salmon is the prey of humans.

Answer:

B

Explanation:

The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?

Answers

Answer:

Neglecting the child

Explanation:

Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.

The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not

appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness

of her baby is a better tool for facilitating mother-infant attachment. .

This lab activity is designed to explore the effect of two substances on the heart rate of a Daphnia magna specimen. One of the activities in this lab is to measure the heart rate when the Daphnia is exposed to alcohol. In the experimental setup, what would be the independent variable?

Answers

Answer is given below

Explanation:

Heart rate was studied in this experiment and is the dependent variable studied or measured. This is a dependent variable. An independent variable is a variable whose modulation is not affected by any other variable in the experiment. Here is the alcohol independent variable. Other substances such as intelligence are also independent variables.

What is a nebula? A. The core of a massive star B. A cloud of gas and dust in space C. A swirling disk with a lot of gravity D. The debris remaining after a supernova

Answers

Answer:

its B. a cloud of gas and dust in space

Nebula is a cloud of gas and dust in space. The correct option is B.

What is special regarding nebula?

A nebula is a distinct luminescent component of the interstellar medium that can be composed of ionized, neutral, or molecular hydrogen, as well as cosmic dust.

When stars form within a nebula, they emit a stream of charged particles known as stellar wind.

Massive stars and young stars have stellar winds that are much stronger than the Sun's.

When the wind collides with the gas in the nebula, it creates shock waves or hydrodynamic instabilities, which shape the gas clouds.

Nebulae are frequently star-forming regions, as seen in the Eagle Nebula's "Pillars of Creation."

Thus, the correct option is B.

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How many brains does a octapus have​?​

Answers

Answer:

9 brains

Explanation:

No explanation, but you can fact check this by looking it up :)

Answer:

9 Brains are there...!

hope this helps

i. In which structure does photosynthesis take place? [2 marks] ii. Name the substance in chloroplasts which absorbs light. [2 marks] iii. Through which structure does carbon dioxide enter the diagram? [3 marks] iv. What role does sunlight play in photosynthesis? [3 marks]

Answers

Answer:

1. Photosynthesis takes place in the chloroplasts.

2. This substance is called chlorophyll.

3. Structure G (Stoma)

4. Sunlight provides energy (light energy) to the chloroplasts for photosynthesis to take place.

Explanation:

Why cant Solar Cells
Work at night ?

Answers

Answer: because there is no sunlight

Explanation: Solar cells are also called as photovoltaic cells. They convert light energy to electricity

Continue adding new species to your volcanic island until you have a successful ecosystem. Drag and Drop the species in order to how they invade the volcanic island. Lichen, Climax community, Bushes, Primary consumers, Pollinators, Moss, Secondary consumers, Trees, Tertiary consumers, Flowers, and Grass

Answers

Answer:

The order of arrangement is as follows

Lichen →Grass → Moss → bushes → Flowers  → Pollinators → Trees → Primary consumers → Secondary consumers → Tertiary consumers

Explanation:

The type of succession that results in a successful ecosystem where initial soil condition is a volcanic island devoid of life any life form and without a soil formation is that of primary succession and involves the gradual ecosystem growth in a long time duration

Organic activity in primary succession is started by pioneer organic species which develop a community of interacting organisms from their biological activities resulting in the arrival of new species and the continuing development simple initial community into a successful complex ecosystem.

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Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
Save and Exit
Next
Submit

Answers

Answer: It's A

Explanation:

Which statement describes gravity?
There is no defined unit of measurement for gravity.
O Gravity is the force that pulls objects toward Earth's center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.​

Answers

Answer:

Gravity is the force that pulls objects toward the Earths centre

Explanation:

Answer:

O gravity is  the force that pulls  object  towards  Earths centre.

Explanation:

explain the structure of nephrons

Answers

Structure of nephron : The filtration units in the kidney are called nephrons. Each kidney has a large number of nephrons which are packed closed together. Nephrons consist of a cup shaped Structure called Bowman's capsule in which a cluster of very thin walled blood capillaries form glomerulis . This cup shaped structure is followed by long tubular structure which is convoluted , twisted and finally leads to the collecting duct.

Functions of nephron : : Nephrons help in filtering nitrogenous waste from the blood. The blood entering the glomerulus contains waste which are filtered in the Bowman's capsule. The filtrate formed may contain some useful substances such as glucose, amino acids, salts and a major amount of water. These are selectively reabsorbed as the urine flows along the tube, The amount of water reabosrbed depends on how much excess water is there in the body andhow much dissolved waste there is to be excreted .

* For structure of nephron * refer to attachment !

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Yellow pods are the dominant trait. The flowchart is missing the labels that describe the traits. A flow chart is shown. A and B both go to C. C goes to both D and E. In which squares should the phrase “Yellow pods” appear? A and D B and E A, C, and D A, B, C, D, and E

Answers

Answer:

its E

explanation : its just a hunch

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