1.The ____________________________________is your first line of defense and its generally impermeable to bacteria and viruses. It also secretes antibacterial ________________________________.
2.  Any substance the body reacts against is called an_________________________________ and can be anything from unhealthy body cells, bacteria or viruses,  or poisonous substances called _____________________________.
3.  Antibiotics are effective against ____________________________infections, but have no effect on most _______________________________infections.
4. Skin, inflammation, stomach acid, and fever are all non-specific parts of the _________________________________immune system.
5. The _________________________immune system is also called "specific" and includes T cells and B cells.
6. The scientific word for ANY white blood cell is _____________________________.
7. The specific immune system has 2 main parts - _________________________________which involves fighting off pathogens in the fluids of the body and ____________________________where infected body cells are destroyed. 
8.  _______________________________are most involved in humoral and _________________________________are in charge of cell-mediated responses. 
9. The T-cell in charge of coordinating the entire immune response is ___________________________________while _________________________________destroys infected body cells. 
10. B-cells are in charge of _________________________________production. 
11. The lymphatic system is composed of tubes and 500-600 lymph __________________, which are full of lymphocytes and filter and clean body tissue fluid before putting it back into the bloodstream in the chest.

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.

Take a dna test... he will be more confident about it then

Explanation:

As I think all of the above is the correct one

Answer:

it is the process in which an organism grows from a seed or similar structure.

-TheUnknownScientist

Answer:

They adapted with new traits to survive to new environments.

Explanation:

survival of the fittest

Answer: At about three thousand miles in diameter, Mercury is the smallest planet in the solar system. But its core is massive — it accounts for more than three-quarters of the little planet's diameter, and more than half its mass. ... So even though Mars is bigger than Mercury, it's less dense — a rocky planet with a difference.

Explanation:

Answer:

D. light energy produced in earth's geosphere

Explanation:

Earth's internal heat budget is very important to Earth's thermal history. The heat flow from the earth's interior to the surface is estimated to be 47 ± 2 terawatts (TW) and originates from two main sources

The internal source of Earth's energy that helps drive convection currents below the crust is D. light energy produced in the earth's geosphere.

Convection current refers to the current that is formed as a result of differential heating. It should be noted that lighter warm material rises while the heavier cool material sinks.

The light energy that is produced in the earth's geosphere is necessary for driving convection currents below the crust. Energy is transferred through the oceans and the geosphere by convection.

Read related link on:

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Answer:

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

This is an inversion.

The section of chromosome has been reversed end to end.

Answer:

I think its B. translocation

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!

Answer:

Answer:

bbbbbbbbbbbbbbbbbbbbbb

The correct answer is :

D. infecting tissues

There are two types of bacterias in nitrogen cycle,

1. Nitrifying bacteria : does nitrogen fixation.

2. De - nitrifying bacteria : converts nitrogenous compounds into atmospheric nitrogen.

Answer:

Yes humans can directly see a photon.

Explanation:

In fact, photons are the only things that humans can directly see. A photon is a bit of light. Human eyes are specifically designed to detect light.

This happens when a photon enters the eye and is absorbed by one of the rod or cone cells that cover the retina on the inner back surface of the eye.

For Example

Thus, Yes humans can directly see a photon.

-TheUnknownScientist

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: 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.

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Answer: Genetic variation in a population is derived from a wide assortment of genes and alleles. The persistence of populations over time through changing environments depends on their capacity to adapt to shifting external conditions.

Explanation:

Answer:

1. logistic population growth

2. K = 72

3. I think weeks 2 and weeks 4 through 10

4. 2.78%

5. 12

B. digestion

Explanation:

The rectum is the last part of the digestive tract. 

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.

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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:

Pink. Incomplete dominance is a blending of phenotypes.

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.

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:

This is the most amazing thing i have ever seen, keep writing songs.

Explanation:

WOW!