hueso impar y externo de la cabeza , ubicado en la parte posterior e inferior de la misma

Answer:

The inner ear has two openings into the middle ear, both covered by membranes

Explanation:

The oval window lies between the middle ear and the vestibule, whilst the round window separates the middle ear from the scala tympani (part of the cochlear duct)

❈ The internal ear —

➥ The inner ear (also called the labyrinth) contains 2 main structures — the cochlea, which is involved in hearing, and the vestibular system (consisting of the 3 semicircular canals, saccule and utricle), which is responsible for maintaining balance.

➥ The cochlea is filled with fluid and contains the organ of Corti — a structure that contains thousands of specialised sensory hair cells with projections called cilia. The vibrations transmitted from the middle ear cause tiny waves to form in the inner ear fluid, which make the cilia vibrate.

➥ The hair cells then convert these vibrations into nerve impulses, or signals, which are sent via the auditory nerve to the brain, where they are interpreted as sound. The round window (fenestra cochlea) is a membrane that connects the cochlea with the middle ear. It helps dampen the vibrations in the cochlea.

➥ The semicircular canals also contain fluid and hair cells, but these hair cells are responsible for detecting movement rather than sound. When you move your head, the fluid within the semicircular canals (which sit at right angles to each other) also moves. This fluid motion is detected by the hair cells, which then send nerve impulses about the position of your head and body to the brain to allow you to maintain your balance.

➥ The utricle and saccule work in a similar way to the semicircular canals, allowing you to sense your body’s position relative to gravity and make postural adjustments as required.

❈ The middle ear —

➥ The middle ear is an air-filled space that contains 3 tiny bones (known as ossicles), called the malleus (hammer), incus and stapes (stirrup). Sound waves that reach the tympanic membrane cause it to vibrate.

➥ This vibration is then transmitted to the ossicles, which amplify the sound and pass on the vibration to the oval window (a thin membrane between the middle and inner ear). The Eustachian tube is a narrow tube that connects your middle ear to the back of your nose and throat (known as the nasopharynx). Its function is to allow air into the middle ear as well as drain mucus from the middle ear into the nasopharynx.

➥ When you swallow, your Eustachian tube opens up to allow air into the middle ear, so that the air pressure on either side of the tympanic membrane is the same. In situations when there is a sudden change in air pressure (e.g. during take-off and landing when travelling on a plane), the pressure in the middle ear is not the same as the outside air pressure.

➥ This can make your eardrum bulge or retract and less able to transmit vibrations, causing temporary hearing problems. By swallowing or ‘popping’ your ears, you can equalise the pressure.

Answer:

Mitosis and meiosis both involve duplication of a cell's dna content

Answer:

Herbívoro: 30000 y productor: 300000.

Explicación:

Si un carnívoro requiere 3000 calorías por día, el carnívoro se comerá al herbívoro que tiene 30000 cantidad de energía y el herbívoro come 300000 cantidad de energía de las plantas porque de productor a herbívoro y de herbívoro a carnívoro, solo el 10 por ciento de la energía se transfiere mientras que el El 90 por ciento restante se libera en la atmósfera en forma de energía térmica, por lo que al usar la regla del 10 por ciento, el herbívoro come plantas en grandes cantidades y el carnívoro come herbívoros.

Positive Effects of Genetic Engineering-

Disease Prevention

Agriculture

Pharmaceuticals

Transplant

Negative Effects of Genetic Engineering:

Mutations

Herbicides and Pesticides

Answer:

* Benefits of positive genetic engineering :-

Genetic modification is a faster and more efficient way of getting the same results as selective breeding. Improve crop yields or crop quality, which is important in developing countries. This may help reduce hunger around the world.

* Benefits of negative genetic engineering :-

- Potential Harms to Human Health

- New Allergens in the Food Supply.  

- Antibiotic Resistance.  

- Production of New Toxins.  

- Concentration of Toxic Metals.  

Answer:

I. Venus orbits the sun...

Explanation:

Answer:

venus orbits the sun

hope this helps

have a good day :)

Explanation:

Answer:

1997

The 1997–98 El Niño event was regarded as one of the strongest El Niño events in recorded history, which resulted in widespread drought, flooding and other natural disasters occurring across the globe.

Explanation:

Answer:

the answer to the question is 1997-98

Answer:

1: B

2: C

3: D

4: D

5: B

6: C

7: A

Explanation:

Alleles: alternative forms of a gene

Gametes: sex cells that are the product of meiosis

Genes: unit of hereditary, made up of DNA

Traits: specific characteristic of an organism

Answer:

1) B

2) C

3) D

4) D

5) B

6) C

7) A

Explanation:

Answer: The granum is a part of the chloroplast. The chloroplast contains the chlorophyll pigment and it is necessary for the trapping of the energy present in the sunlight. As a result of this the photolysis of water takes place and hence water is broken down from water molecule to proton and oxygen.

Explanation:

Answer:

75%

Explanation:

After the fertilisation the genotype will be : 3 Ff, 1 FF . So the phenotype will be : 3 Flar fingernails and 1 round fingernail . 3÷4 × 100= 75&

Answer:

Pink. Incomplete dominance is a blending of phenotypes.

Answer:

well because that is how we was made the skeleton is first then the nervous system the muscular

Explanation:

because the skeleton is the base the nervous is the protector of the skeleton and the muscular system is the protector of the nervous system

This is an inversion.

The section of chromosome has been reversed end to end.

Answer:

I think its B. translocation

Answer:

All of them are the correct answer

Answer:

Below

Explanation:

I used a punnett square to figure this out!

If you were to cross a heterozygous tall plant (Tt) with a short plant (tt), the possible resulting genotypes of the offspring would be:

50% chance of the offspring being heterozygous dominant (Tt)

50% chance of the offspring being short (tt)

Hope this helps!

B. digestion

Explanation:

The rectum is the last part of the digestive tract. 

Answer:

carbon dioxid

I hope it's helps you

The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.

Answer:

Increase

Explanation:

Edpuzzle 2021

The carrying capacity for an animal would increase.

Animals are often used by travellers or farmers to carry different types of loads. Such animals include the donkey, buffalo, oxen, elephant, horse, camel and yak.

Such animals derive energy from already produced foods which is required by their body to support the heavy loads carried by them.

When the food or resources available increases the carrying capacity of these animals are expected to increase because more energy is being made available.

Learn more about food here:

https://brainly.com/question/21896808

Answer:

I would have to say that A is the best choice

Explanation:

This is because all the other choices is not what the question is asking you for.

D.

Traits of two different organisms can be similar due to convergent evolution, that is, natural selection which favors the evolution of similar traits in species. The result of convergent evolution are analogous traits. These are traits which are similar but do not originate from a common ancestral trait. These can often be mistaken as homologous traits, which are traits that do originate from a common ancestor.

The take away here is that similarity of traits does not necessarily mean that two organisms shared a common ancestor.

However, by looking at the DNA sequences of the organisms we can determine if they truly shared a recent common ancestor or not.

Answer:

A human heart is roughly the size of a large fist.

Explanation:

but the size varies according to an individual's age, health and size. The heart weighs 7 to 15 ounces.

Answer:

Both depends on different factors.

Explanation:

The rate of movement of the air bubble is not exactly the same as the rate of water loss from the plant because both depends on different environmental factors. The higher rate of movement of the air bubble occurs due to removal of pressure while on the other hand, the rate of water loss from the plant occurs due to temperature. So both air bubble and transpiration process depends on different environmental factors.

Answer:

well number one would be abiotic and number 2 would be B

Explanation:

biotic is the ability of living things/species to increase under certain kind of condition or increase under evironmental conditions.

Answer: The movement of continents changes wind patterns and ocean currents.

hope this helps!

Explanation:

The best statement that describe the effect of tectonic activity on climate change is that the movement of continents changes wind patterns and ocean currents.

Tectonic activities includes volcanoes, mountain building, earthquakes and many more.

Tectonic activities are common in plate boundaries where plates converge, diverge or transform.

As a result of the movement of these continental plate, tectonic activities occurs causing earth climate change

Therefore, the movement of this oceanic or continental plates changes the wind pattern and ocean current.

learn more on tectonic activity here: https://brainly.com/question/12907968