in developing his views on natural selection, darwin recognized that in domesticated species humans made the selections but in undomesticated species nature made the selections. true or false?

Answer:

The different types of foods most birds naturally eat include insects (worms, grubs, and mosquitos), plant material (seeds, grasses, flowers), small berries or fruit, and nuts. Larger birds like hawks and vultures may also eat small animals like rodents and snakes.

Domestication is the process of adapting wild plants and animals for human use.

In order to obtain a more reliable supply of resources from another group of creatures, humans must exert significant control over their reproduction and care over an extended period of time. This process is known as domestication. According to a more comprehensive biological definition, domestication is a coevolutionary process that results from a mutualistic relationship in which one species—the domesticator—creates an environment in which it actively manages the survival and reproduction of another species—the domesticate—in order to supply the latter with resources and/or services. Humans' domestication of plants and animals was a significant cultural advancement on par with the discovery of fire, the production of tools, and the evolution of spoken language.

To know more about Domestication here:

https://brainly.com/question/4914896

#SPJ4

Answer:

sympathetic nervous system

Explanation:

The autonomic nervous system has two components, the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers.

A decomposer ultimately obtains all its energy from e. dead and decaying plant matter. Decomposers play a crucial role in breaking down organic materials and recycling nutrients in ecosystems.

The answer to your question is (e)

Decomposers are organisms that break down dead organic matter, such as dead plant and animal material, into simpler compounds. These simpler compounds can be reused by other living organisms in the ecosystem.

Decomposers play an essential role in nutrient cycling, as they release nutrients back into the soil, making them available for plants and other organisms to use. It's important to note that while decomposers obtain their energy from dead and decaying organic matter, they are not necessarily considered predators or parasites, as they do not actively hunt or harm other living organisms to obtain their food.

To know more about decomposer  visit:-

https://brainly.com/question/28896356

#SPJ11

Answer: B

Explanation: The other answers are talking about similarities among different species.

The ranking considers the relative ionizing power and energy deposition characteristics of each radiation type. Alpha particles, due to their high ionization density and short range, pose the highest risk per unit absorbed dose.

Ranking the different types of radiations in terms of their harmfulness per unit absorbed dose:

1. Alpha (α) particles: Alpha particles have a relatively large mass and charge, making them highly ionizing and more harmful per unit absorbed dose. They deposit a significant amount of energy in a short distance, causing severe damage to tissues and organs.

2. Beta (β) and gamma (γ) radiations: Beta and gamma radiations are less harmful per unit absorbed dose compared to alpha particles. They have lower ionizing power and can penetrate deeper into tissues. While still potentially harmful, their ability to cause damage is generally lower than that of alpha particles.

3. Protons: Protons, despite having a mass and charge similar to alpha particles, are less harmful per unit absorbed dose. They deposit energy over a larger distance, resulting in a lower concentration of energy deposition in tissues. This makes them relatively less damaging compared to alpha particles.

Beta and gamma radiations have lower ionization density and can penetrate tissues more deeply. Protons, while still ionizing, deposit energy over a larger range, reducing their harmfulness per unit absorbed dose.

To know more about alpha particles

brainly.com/question/24276675

#SPJ11

Answer:

Sharp teeth and sharp claws so it can shred away the bark, and help for attacks

Good hearing and ears to be aware of noise in their surroundings

The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.

Nerve receptors can be defined as biological structures capable of converting external/internal stimuli to electrical impulses.

Nerve receptors include different types of cellular structures located in eyes, skin, mouth, nose, etc.

In conclusion, the sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.

Learn more about nerve receptors here:

https://brainly.com/question/25753221

#SPJ1

Answer:

b. Antibodies are used for Northern blot analysis.

c. VNTRs are highly conserved in human populations.

Explanation:

The northern blot technique is used in molecular biology laboratories for detecting specific RNA molecules in a sample of RNA derived from a particular cell/tissue. Antibodies can be detected by the enzyme-linked immunosorbent assay (ELISA). In ELISA, antigens are used to detect specific antibodies: the addition of the antigen produces a positive reaction i.e., formation of the antigen-antibody binding complex. Subsequently, a second antibody with a particular marker is added to bind with the complex, thereby producing a change in the color and thus evidencing the presence of the target antibody in the sample. On the other hand, the variable number of tandem repeats (VNTR) are short sequences (around 20 to 100 bp) whose number of repetitions varies at specific loci in the genome of many organisms, including humans. Since VNTR sequences exhibit variation in length between individuals of the same species/population, they are widely used as molecular markers to identify individuals, QTL (quantitative trait loci) mapping, establish phylogenetic relationships among individuals/cultivars/lines, etc.

if they did something wrong while doing it: for example, if they were supposed to make your future baby's hair pink but instead it made your baby be bald forever, this will be very harmful to the communities. they will lose a lot of money and receive lots of hate.

hope this helps. :)

stay safe, happy, and healthy! have a great day.

Answer:

Predation makes sure that no species becomes overpopulated.

Explanation:

For example, between a fox and a rabbit.  If the fox was not the predator, the rabbit population would be out of control.  Rabbits eat grass and stuff so too many rabbits will eat all the grass.  There will be a chain effect.  Foxes are needed to control the rabbit population and restore stability in an ecosystem

Answer:DNA,RNA,ATP

Explanation:

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Answer:

Changing

✔ environmental factors

can cause certain traits to be favored through

✔ natural selection

. This can lead to changes in

✔ genetic variation.

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Complete question:

In the 1890s, Northern elephant seals were hunted almost to extinction. An unknown population of less than one hundred animals managed to survive on the tiny island of Guadalupe off of Mexico. The current population of over 100,000 is thought to be derived from that tiny remnant population. Compared to the Southern elephant seals (which did not experience such a bottleneck), the Northern elephant seals likely have -------- (Lower - Higher) genetic diversity and -------- (Lower - Higher) levels of genetic diseases.

Answer:

In the 1890s, Northern elephant seals were hunted almost to extinction. An unknown population of less than one hundred animals managed to survive on the tiny island of Guadalupe off of Mexico. The current population of over 100,000 is thought to be derived from that tiny remnant population. Compared to the Southern elephant seals (which did not experience such a bottleneck), the Northern elephant seals likely have Lower genetic diversity and Higher levels of genetic diseases.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure-bottleneck effect- or because of a population split -founder effect-.

In the exposed example, extensive hunting acted as a pressure that reduced the number of Northern elephant seals to fewer than 100. This population experienced one or many generations of small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population,  the population size might have recovered to a current population size of 1000,000 individuals, but the genetic pool might have not. When the small population increases in size, it will have a genetically different composition from the original one. In these situations, there is a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. It will involve more individuals each time and increase the probability of developing a genetic disease.

Answer:

to increase light exposure

Explanation:

One hypothesis for the Triassic extinction event is fluctuating sea levels that caused a decrease in primary productivity and a loss of habitat for shallow marine species. Fluctuating sea levels can lead to changes in the distribution and extent of shallow marine environments, such as reefs and coastal regions, which are vital habitats for many marine organisms.

These fluctuations may have resulted from a variety of factors, including tectonic activity, climate change, and changes in ocean circulation patterns. As sea levels rose and fell, shallow marine environments could have been submerged or exposed, disrupting the ecological balance and reducing the productivity of primary producers such as algae and plants. This decline in primary productivity would have had cascading effects throughout the food web, ultimately leading to the decline and extinction of many shallow marine species.

to know more about "tectonic" https://brainly.com/question/2997310

#SPJ11

In standard anatomical position, the trochlea on the humerus is positioned laterally, whereas the capitulum is positioned medially.

The given statement is False.

At the anterior and distal ends of the humerus, respectively, are two smooth, rounded surfaces that resemble knuckles. Surrounding these objects, the elbow flexes and extends.

The medial epicondyle and capitulum of the trochlea are situated on opposite sides of the same bone. Both the coronoid fossa and the olecranon fossa are directly inferior to it on both sides.

The trochlea, a region with a pulley- or spindle-like form that articulates with the ulna bone, is the more medial of these areas. The capitulum, a knob-like feature found on the anterior surface of the distal humerus, is placed directly lateral to the trochlea.

Learn more about trochlea:

https://brainly.com/question/9043121

#SPJ4

During pyruvate oxidation, the oxidation of pyruvate, the formation of acetyl-CoA, and the formation of CO2 also occur along with the formation of NADH.

Pyruvate oxidation is a metabolic pathway that occurs in the mitochondria of eukaryotic cells and the cytosol of prokaryotic cells. The pyruvate molecule that is produced in glycolysis enters the mitochondria from the cytosol to undergo oxidative decarboxylation. Pyruvate oxidation is the link between glycolysis and the citric acid cycle (also known as the Krebs cycle or the TCA cycle).Pyruvate oxidation involves the conversion of pyruvate into acetyl-CoA, a process that includes the removal of one carbon atom from pyruvate and the formation of CO2. During this reaction, one NAD+ molecule gets reduced to NADH, which can then be utilized by the electron transport chain to generate ATP. The overall reaction for pyruvate oxidation is: Pyruvate + CoA + NAD+ → Acetyl-CoA + CO2 + NADH. In conclusion, during pyruvate oxidation, the formation of NADH occurs as well as the oxidation of pyruvate, the formation of acetyl-CoA, and the formation of CO2.

learn more about pyruvate oxidation:

https://brainly.com/question/28941347

#SPJ11

Answer: It is important that the daughter cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set.

Explanation:

In mitosis a cell divides to form two identical daughter cells.

Answer:

Hair grows in follicles

Answer:

Explanation:

follicicles

In the experiments conducted for haw flies and apple flies, it was found that postzygotic isolation was operating between the two species.

In the experiments conducted for haw flies and apple flies, it was found that postzygotic isolation was operating between the two species. Postzygotic isolation refers to the barriers that arise after the formation of a hybrid zygote that prevent the hybrid from developing into a viable, fertile adult. In the case of the haw flies and apple flies, the experiment involved cross-breeding the two species to determine whether they could produce viable and fertile offspring. The results showed that while the hybrids could be produced, they were sterile and could not produce viable offspring of their own.
This is an example of hybrid sterility, which is a type of postzygotic isolation. Hybrid sterility occurs when the hybrid offspring are unable to produce viable gametes, thereby making them unable to reproduce with either parent species. The reason for this sterility is often due to differences in the number of chromosomes or gene expression between the two parent species, which leads to problems in meiosis and gamete formation.
In summary, the experiments conducted with haw flies and apple flies demonstrate that postzygotic isolation is operating between the two species, specifically through hybrid sterility. This highlights the importance of reproductive isolation in maintaining species boundaries and preventing the formation of hybrid populations.

To know more about postzygotic isolation visit: https://brainly.com/question/12385999

#SPJ11

The postzygotic isolation mechanism operating between haw flies and apple flies is most likely hybrid inviability. This occurred when the flies started mating and laying eggs in different host trees, causing two separate fly species to emerge that couldn't interbreed.

In the given case of haw flies and apple flies, the postzygotic isolation mechanism at play is most likely hybrid inviability. This term means that the offspring of two different species (here, the haw flies and apple flies) will not survive or develop properly. In this case, when flies from the hawthorn tree species started mating and laying eggs in apple trees, these new flies developed a preference for apple trees. This created two distinct populations of flies separated by host species, not by geography. Over time, the apple fly became a different species from the haw fly, incapable of breeding with haw flies. This resulted in postzygotic isolation.

https://brainly.com/question/36595916

#SPJ12

Answer:

Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces. ... This reduces the plant's ability to photosynthesise and grow properly, which reduces the farmers' crop yield .

Answer: cytoskelton is a microscopic network of protein filaments

Explanation:

Answer:The cytoskeleton is a dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including bacteria and archaea. It extends from the cell nucleus to the cell membrane and is composed of similar proteins in the various organisms.

Explanation: this is one of my spelling words!

~any questions or comments, i'm open to criticism

~brainliest would be appreciated

~satay safe and I love all of you

Cannabis concentrates contain significantly more THC than the cannabis plant. Cannabis concentrates commonly have 40-80% THC and can contain up to 90% THC.

Cannabis- The sativa or indica cannabis plant's dried leaves and blooming tops. Cannabis includes cannabinoids, which are active compounds that have drug-like effects on the immune system, central nervous system, and other bodily systems.

The most popular reason for using cannabis for medicinal purposes is by far the relief of chronic pain.

THC- The primary psychoactive ingredient of cannabis is tetrahydrocannabinol (THC), one of the 483 known plant chemicals. This contains at least 65 additional cannabinoids, such as cannabidiol (CBD). Cannabis can be taken orally, vapourizingly, ingested, or utilized as an extract.

To know more about the Tetrahydrocannabinol (THC), click on the below link,

https://brainly.com/question/8317704

#SPJ1

Answer:

The sagittal planes runs parallel to the longitudinal axis of the organism, or from the mouth to the tail. The direction toward the sagittal plane is called medial, while the direction away from the sagittal plane is known as lateral

Explanation:

Answer:

It indicates Acute intermittent porphyria ( AIP)

Answer:

A wide range of functions are performed by RNA, from translating genetic information into molecular machines and cell structures to controlling gene activity during development, cellular differentiation, and changing environments.

Explanation:

None

olfactory epithelium is not included in the chemoreceptor output to a respiratory centres of the medulla oblongata.

These only exist on the ventrolateral surface of the medulla oblongata and monitor changes in the pH of spinal fluid. Central chemoreceptors were once thought to be confined to areas on the ventral side of the medulla, but it is now thought that they are found throughout the brainstem, cerebellum, hypothalamus, and midbrain. High concentrations of ammonia and hydrogen ions, as well as low oxygen concentrations, cause the chemoreceptor cells to react. With the transmission of signals that block inspiration, the pnuemotaxic centre may accurately control the respiratory rate. Direct chemoreceptors include buds, which are sensitive to environmental factors in the mouth, as well as the carotid banks and aortic glands, which sense pH changes within the body. There are two types of chemoreceptors: peripheral and central.

(All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata, except the

a) Aortic body.

b) Olfactory epithelium.

c) Medullary chemoreceptors.

d) Carotid body.

e) All of the above)

Learn more about respiratory

https://brainly.com/question/18024346

#SPJ4