prokaryotic cells have nulcleus

Invasive species are usually competitors, predators, high reproducers, and are mostly introduced by humans activities.

They are plant or animal species that invade ecosystems.

They are mostly introduced to ecosystems from another ecosystem and once they establish themselves, end up out-competing native species for resources.

Invasive species generally have high reproductive capacity and efficient dispersal mechanisms.

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Answer:

prophase I

Explanation:

during prophase I, and it is the exchange of genetic material between non-sister chromatids of homologous chromosomes

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Answer:

1. Because only regular-shaped objects have a consistent length, width, height, and shape. When dealing with an object composed of differing shapes, you must calculate each portion separately and then add them. For instance, if you have a swimming pool of two depths and want to determine cubic feet, you would have to calculate the volume for each section and then add them.

2. method used to figure the volume of an irregular shaped object Neither measurement is more "accurate" than the other--they simply denote different things. Length is a measurement of the distance between two points in space. The area is a measurement of the surface covered by a given shape.

3. not in the water as the sugar would dissolve if you could find a liquid that sugar does not dissolve in, then it would work

Explanation:

Answer:

The grass hopper, rabbit, and the slug are primary consumers.

Explanation:

They are all herbavores and at the second lowest part of the food web (the first being the grass

Answer:

Endometrium

Explanation:

Answer:

Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.

Explanation:

Answer:

cardiac muscles perform involuntary muscular movements of the heart, aiding the heart to pump blood throughout the body, while skeletal muscles perform voluntary muscular movements of bones, aiding physical movements of the body such as walking, running, and writing and smooth muscles perform an involuntary muscular movements of internal organs, aiding functions of the body such as digestion, urination, and breathing.    

Answer:

a cell is the basic unit of structure and function

Answer:

it b or d

Explanation:

that is the most important for scientistes to study

b tells what can be in the fossill or find in the fossill

so i think it b

Answer:

The correct answer is C

Explanation:

The reason why the age is of high importance is because it determines during what time the fossil lived and how it has evolved.

Answer:

increase secretion of renin by the juxtaglomerular complex

Explanation:

Answer:

When genes are close together on the same chromosome, they are said to be linked. That means the alleles, or gene versions, already together on one chromosome will be inherited as a unit more frequently than not.

Explanation:

:)

When genes are close together on the same chromosome called as linked genes, means the alleles present together on one chromosome and it will be inherited as a unit.

A chromosome is located in nucleus of the cell is the main carrier of genes or DNA; It is a thread-like structure observed in plant, animal and human cells and composed of molecule of DNA (Deoxyribonucleic acid) and histone proteins.

DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and RNA content ranges from 1 to 10% in chromosome.

There are Two types of protein present  such as histone and non-histones proteins where histone protein  constitute portion (90% of total protein), whereas non-histone protein occupy a small portion (around 10% of total protein).

The histone protein is basic in nature, whereas, the DNA is acidic, so neutralization occur, DNA in chromosome can be present as forms such as Euchromatin and Heterochromatin.

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This can be defined as the variant form of a gene. In this scenario, there are two variants which are dominant and recessive allele.

Both parents have to possess the dominant allele for all the offsprings to also have the dominant trait.

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Answer:

first/ lowest level

Explanation:

The breaststroke is not started in the dive position in the water. Therefore, the statement is false.

The breaststroke is not started in the dive position in the water. It started in a stationary position with the swimmer, which faces forward and floats in the water.

The swimmer then takes a breath followed by the beginning of the stroke by pulling both arms back simultaneously and lifting their head and shoulders out of the water.

The legs are brought together by the swimmer andglides forward before the repetition of the arm and leg movements. It is the butterfly stroke because of the dive position, as the swimmer resurfaces both arms extended above the head to begin the stroke.

Therefore, the breaststroke is not started in the dive position in the water as it is started in a stationary position with the swimmer facing forward and floats in the water.

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Answer:

C6H12O6: 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms bonded together making one molecule of glucose

Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery  before reaching the lungs to pick up oxygen

When the blood enters the right ventricle it contracts and sends the blood through the Pulmonary valve before it reaches the Pulmonary artery which is passes the blood to the Lungs where it becomes oxygenated.

Hence we can conclude that Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery  before reaching the lungs to pick up oxygen.

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Answer:

The three factors that influence the textures of igneous rocks are the speed of cooling, the silicate content, and the water content.

Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidified: magma that cools slowly will form an igneous rock with large crystals. lava that cools quickly will form an igneous rock with small crystals. When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.

If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.

A manure is that which is used to improve the fertility of the soil. It is composed of the nutrients that are required by the soil. We know that each pig produces 30 liters of manure each day, and the average feedlot holds 900 pigs. Hence, each day, 30 * 900 = 27000 litres of manure is produced.

Within a period of 30 days, a total of 27000 litres of manure * 30 = 810,000 litres of manure is produced. If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.

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It would be about twenty - two- ish feet

Answer:

the correct answer is A glucose

The neuron is a highly specialized type of nervous system cell that is called unipolar when dendritic and axonal processes are continuous and the soma lies off to one side.

The neuron is the structural and functional unit of the nervous system, which when they have only a short projection that later branches into two or more branches, are considered unipolar.

That is, they are those neurons in which only one extension or neurite emerges from the soma, which will act as an axon and at the same time will have dendrites with which it can both receive and transmit information.

Therefore, we can conclude that the neuron is a highly specialized type of nervous system cell that is called unipolar when dendritic and axonal processes are continuous and the soma lies off to one side.

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The cytokine describes the group of proteins such as interferons and interleukins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.

They are messenger molecules with a glycoprotein structure, whose lifetime is short and generally secreted in cascades.

They are produced by different activated cells, responsible for innate and/or acquired immunity, and regulate the immune and inflammatory response.

Therefore, we can conclude that the cytokine describes the group of proteins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.

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Answer:

a. Gravity erosionerosion

Explanation:

The selection of antibiotic resistant bacteria is an example of natural selection.

Natural selection is the process whereby organisms that are better suited or adapted to their environment have more chance of survival.

Antibiotic resistance is a phenomenon of certain bacteria that gives them an edge over their susceptible counterparts.

Antibiotic resistance is caused by evolution through the process of natural selection.

Therefore, the selection of antibiotic resistant bacteria is an example of natural selection.

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You must be notified of this engineers who control power systems for cities in the affected area and scientists responsible for tracking and maneuvering satellites.

The sun is a gigantic thermonuclear reactor that eventually fires huge amounts of concentrated radiation in the form of particles in a constant stream called the "solar wind".

A geomagnetic storm can last just a few minutes, or several hours, but the effects of geomagnetic storms can linger in the Earth's magnetosphere and atmosphere for days to weeks. The storm also results in a rapid drop in the strength of Earth's magnetosphere for a period of between 6 and 12 hours. Then the magnetic field gradually recovers over a few days.

Whit this information, we can conclude that you must be notified of this engineers who control power systems for cities in the affected area and scientists responsible for tracking and maneuvering satellites.

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Explanation:

4) option B endosymbiont theory

2) option C prokaryotic cells

Answer:

The skeletal system:This system controls our bones so we aren't just a blob on the ground. Our bones help keep our important organs intact.

The muscular system works about the same way, it protects your bones so they don't grind against eachother when you move. Your muscles give you the ability to move.

Our organ system is what keeps us alive, you can't clean your room if your dead and if your room is hot you need your skin so you don't overheat and die.

Lastly of course is your respitory system, you need to bring when your moving about. Our ability to breathe gives our blood cells and our heart what they need to keep working.

Answer:

CCG UAG GUC

Explanation:

The complementary mRNA strands for DNA are shown below.

G = C
A = U
C = G
T = A
U = A

Using this, we can conclude that the corresponding mRNA is CCG UAG GUC.

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