Please help me i dont understand how this stuff works

Answer:

D.

Explanation:

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Classification of organisms is defined as dividing living beings into different kingdoms based on their genetics, traits, and other features.

Thus, the given statements about the classification of organisms are correct.

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Answer: When the diaphragm contracts, it moves inferiorly toward the abdominal cavity, creating a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and outward, causing the rib cage to expand, which increases the volume of the thoracic cavity.

The movement of diaphragm and ribs govern the mechanism of ventilation in human lungs.

The ventilation in human lungs or pulmonary ventilation is defined as the process of intake of air during inhalation, and expiration as the release out of air. It is also termed as breathing.

The lungs are present in the thoracic cavity, with the diaphragm below the lungs separating the thoracic cavity from the abdominal cavity. The rib cage is present outside lungs and prevent them.

The inhalation is the process of taking in air. The increase in the volume of lungs results in the increased movement of diaphragm to the abdominal cavity.

The intercostal muscles move upwards and the rib cage move outwards. Thus, the air is inhaled in the system.

The exhalation of air is performed antagonist to the inhalation. The relaxation of diaphragm and the movement of rib cage results in the decreased volume of the lungs, and the air is expelled.

Thus, the movement of diaphragm and ribs govern the mechanism of ventilation in human lungs.

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Answer:

C. Cells are the basic units of life.

Explanation:

Answer:

In a transverse wave, a wavelength is the distance from one crest to the next crest or from one trough to the next trough. In a longitudinal wave, the wavelength is the distance from one compression to the next compression or from one rarefaction to the next rarefaction.

Explanation:

Context clues for the second, third, fifth, and sixth blanks; answer is at end of clause

First one was instinct, fourth was because it seemed to be a comparison

Hope this helps! Have a great day!

Answer:

The temporal lobes are also believed to play an important role in processing affect/emotions, language, and certain aspects of visual perception.

The cerebellum is busy planning, adjusting and executing movements of the body, the limbs and the eyes.

Explanation:

Answer:

A.  Scientists should create a graph showing a comparison of the relative sizes of all the galaxies and stars.

Explanation:

Due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.

Scientists can conduct cosmology research in a variety of ways, including using computer simulations to model and predict the evolution of the universe and all of its materials, using gravitational lensing to measure the distribution of dark matter, and so on. Apart from that, the universe can be studied by using telescopes at various wavelengths,

Hence, due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.

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Answer:

Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. ... During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. ... Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.

Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.

Mitosis is a way of making more cells that are genetically the same as the parent cell. It plays an important part in the development of embryos, and it is important for the growth and development of our bodies as well. Mitosis produces new cells, and replaces cells that are old, lost or damaged.

Mitosis is a process where a single cell divides into two identical daughter cells (cell division). ... The major purpose of mitosis is for growth and to replace worn out cells.

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. ... Meiosis begins following one round of DNA replication in cells in the male or female sex organs.

Explanation:

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Answer:

A)in the shed

Explanation:

Just did the usa test prep

10

30 dived by 3 = 10

hope it helps

Answer:

About 75%

Explanation:

About 75% will have two ww alleles, while the rest will have Ww alleles.

Answer:

The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha central carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain

Explanation:

:)

Explanation:

The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain.

Answer:

B. The pituitary gland

Explanation:

Can't be the ovaries, they're down by the hips!

Can't be adrenal glands, they're on top of the kidneys!

Can't be the thyroid, that's low on the front of the neck or something like that!

It's B, the pituitary; it's on the base of the brain.

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Answer:

Yes, it does.

Explanation:

If the strawberry you buy is all soggy and way too soft, it is likely rotten, while the normal texture we are used to shows that it is edible.

Answer:

Frozen strawberries were characterized organoleptically by a moist, soft and limp appearance, and poor shape retention. They felt very soft, moist, limp and slightly slimy in the mouth. Interior fibers had a tough texture.

Answer:

Your answer would be B.

Explanation:

In mitosis, the nucleus divides once. In meiosis, the nucleus divides twice.

Answer:

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Explanation:

Well, one could use a magnet to see if it's ferrous. One could melt it to check which type it is, use a metal detector, or just use their senses: If it dings or clinks like metal, and feels like it’s texture. If it polishes with metal polish, is reflective, can be shaped or shape when heated… It usually is a metal. If it rusts, or oxidizes, it is or contains metal. If it “smells" like metal, most likely, it is metal. Finally, if it walks like metal, and quacks like metal, most likely we have a metal

Answer:

D

Explanation:

Answer:

Due evolution, discoveries and having both characteristics.

Explanation:

The Kingdom of Life change due to evolution in the body of organisms, discoveries of new organisms that are different from plants and animals. There are some organisms that have both plant and animal characteristics so it can't be placed in plant or animal kingdom so that's why the kingdom of life changes from two kingdom system to 5 kingdom system.

Answer:

MUTATION

Explanation:

Mutation is a change or alteration in the genetic sequence of a DNA or RNA (nucleic acid) that are induced by a chemical substance called MUTAGEN or by a spontaneous occurrence. Mutation are of different types depending on how it occurs in the cell. A mutation can be deletion (removal), substitution (replacement), insertion (addition) etc.

Based on this question that states that "any change in the sequence of bases in DNA or RNA that can be caused by mutagen or can happen spontaneously in the cell", the process of MUTATION is being described.

Bacteria can convert nitrogen in the air into a form plants can use.

The earth atmosphere contain a huge amount of oxygen which is needed by plants. These Nitrogen can be converted into a form in which can be used by plants through a process known as nitrogen fixation.

Fixation is a process that converts nitrogen in the atmosphere into forms in which plants can use. Nitrogen can be fixed using fertilizer.

Also, bacteria can fix nitrogen into the soil naturally.

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Answer:

B. Clay can be made into anything (like a cup or a figurine) just like a stem cell can become different types of cells

Explanation:

Answer:

A

Explanation:

Thick clouds can trap lots of heat. This has a warming effect on earth.

Answer:

B.. More evaporation due to warmer temperatures increases water vapor, forming high, thin clouds

Explanation:

Thin clouds don't reflect as much sunlight as low, thick clouds do. Because of that more sunlight enters the atmosphere and increases global warming

Plutonium

Neptunium

osmium

let me know if it's correct or not, these were the only ones I could think of.

Few natural elements have a greater density than gold are plutonium, neptunium, and osmium.

An element is define as a type of substance that is impossible to  break into smaller pieces by the help of chemical process. There are several rules that should be followed at the time of assinging name of the elements. The first rule is name of the element is not a proper noun. The second rule is the symbols of the element that must be of one or more than one symbol.

Density is define as the mass per unit volume it means that 1 kg mass present in 1 meter cube is called density, density is also states that the how compact an material.

Mathematically

Density = mass/volume

S.I unit of density is kg/m^3

Density is higher in solid as compare to liquid and density of liquid is higher than gas so density is in order of SOLID>LIQUID>GAS. So we know that solid is compact in nature as compare to liquid and gas.

Therefore, Few natural elements have a greater density than gold are plutonium, neptunium, and osmium.

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Answer:

AAAUGCUGGAUUCGU

Explanation:

Answer:

Without genetic variation, natural selection is only able to grow the number of allelomorphs that previously exited in the population. Natural selection occurs through an interaction between the environment and the variability of the individual organisms making up a population. If every giraffe had the same neck length, there would be nothing to change and they would never have a long neck by now.

Answer:

Bacterial diseases are treated with antibiotics. Antibiotics work by killing the harmful bacteria or by stopping them from reproducing and spreading. Different types of antibiotics are effective for treating specific types of bacteria.

Explanation:

Answer:

by using antibiotics, antibiotics are harvested from fungi because they have a gene that kills the bacteria, i think it only works on bacterial infections, most of the antibiota said are used on animals and live stock.

Explanation:

Answer:

the population starts to slowly decline

Explanation:

The population will decline drastically because there is not enough resources to sustain the population or increase the population.

Answer:

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Explanation:

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Answer:

Protista

Explanation:

Kingdom: Protista and Division: Charophyta

Answer:

protista

Explanation:

it exists in haploid cells reproduced by binary fission

Answer:

1. Viruses 2. ? 3. Viruses 4. ? 5. Immunity 6. Vaccine

Explanation: