Organ systems maintain which of the following at
just the right
levels to support life processes?
a.) pH
b.) Carcinogens
C.) Temperature and pH
d.) Carcinogens and pH

Answer:

13 and 1.3 billion years

Explanation:

Just got it right

Answer:

1. 13

2. 1.3 billion years old

Explanation:

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Answer:

Q1 As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts.

Q2When stars first begin to fuse hydrogen to helium, they lie on the zero-age main sequence. ... The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core. The star gets larger, redder, and more luminous as it expands and cools.

Answer:

B

Explanation:

DNA is damaged and cells grow out of control

Answer:

independent variable

Explanation:

Independent variable: In psychological experiment, the term "independent variable" is described as a specific variable that is being controlled, altered, or manipulated by an experimenter or researcher or investigator to see its effects on the dependent variable. Independent variable has a direct effect on the dependent variable, so any changes in the independent variable will effect the dependent variable directly.

In the question above, the amount of light in this investigation is an independent variable.

Answer:

independent variables

Explanation:

i said so :)

Answer:

Water is polar and oil is nonpolar so the substances won't mix.

Explanation:

Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water.

Answer:

a

Explanation:

Answer:

A

Explanation:

Answer:

Monerais a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria.They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).

Explanation:

Answer: Climate change

Answer:

Humans—more specifically, the greenhouse gas (GHG) emissions we generate—are the leading cause of the earth's rapidly changing climate. Greenhouse gases play an important role in keeping the planet warm enough to inhabit. But the amount of these gases in our atmosphere has skyrocketed in recent decades. Global sea level rise is complex as well. To begin with, it has multiple causes, including the thermal expansion of the ocean as it warms, runoff of melt water from land-based ice sheets and mountain glaciers, and changes in water that’s stored on land. These factors combine to raise the height of our global ocean about 3.3 millimeters (0.13 inches) every year. That rate is accelerating by another 1 millimeter per year (0.04 inches per year) every decade or so.

Explanation:

Answer:

Biotic:

Abiotic:

Explanation:

Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.

Hope this helps.

Answer:

grass, rat, snake, hawk

Explanation:

ones eats d other

Answer:

plant, insect, mouse, owl

plant makes food from the sun

insect eats plant

mouse eats insect

owl eats mouse

Answer:

In the mitochondrial matrix

Explanation:

The mitochondria is an organelle within the cytoplasm of the cell.  It consists of an outer membrane, inner membrane, and matrix containing a gel-like substance. During aerobic respiration in mitochondria, cells break down sugars in the form of glucose into [tex]CO_{2}[/tex] (carbon dioxide) and  [tex]H_{2} O[/tex] (water) to obtain energy in the form of ATP or adenosine triphosphate.

aerobic respiration:

C6H12O6+ 6 O2        →      6 CO2 + 6 H2O + ≅38 ATP

(glucose)   (oxygen)         (carbon dioxide) + (water)

The Kreb's cycle involves several enzymatic reactions, where pyruvate derivatives obtained from glycolysis, are reduced and oxidized to harvest energy as ATP.

B Because Cellulose is a polysaccharide consisting of linear chain of numerous linked D-glucose units whereas proteins are formed of number of amino acids linked together by peptide linkage.

Cellulose is a polysaccharide and a structural component of the plant cell. It is a carbohydrate made of many monomers linked together. Thus, B is the correct option.

Cellulose is an organic chemical that is insoluble in water and is a tough structure classified as carbohydrates. Cellulose is a structural component of plant cells.

It is made by monomer units linked by the beta-1,4 glycosidic bonds and is a biodegradable, tasteless organic compound with the chemical formula (C₆H₁₀O₅)ₙ.

It is the main component of the plant cell wall that provides support and shape due to its fibrous structure. It is made of linear chains of D-glucose units that makes the polysaccharide.

Therefore, option B. cellulose is a carbohydrate.

Learn more about cellulose here:

https://brainly.com/question/5957180

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High air pressure usually means clear weather because stable air is sinking. The correct option would be D.

High air pressure usually causes the sky to be clear.

This is because high air pressure causes the air at the lower atmospheric level to sink down towards the earth.

This is unlike low air pressure. It brings a cloudy sky along with precipitation.

More on air pressure can be found here: https://brainly.com/question/15189000

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Answer:

1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.

2.Consists of three distinct layers, which are rigid, thicker and highly muscular.

3.Located deep within the body.

4.Red in colour.

5.Carry blood away from the heart to various parts of the body.

6.High pressure, as the blood flows by the pumping pressure of the heart.

7.Comparatively higher oxygen level.

8.The level of carbon dioxide is low

9.Lumina is narrow

10.Valves are absent

11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.

1.Involved in carrying impure, deoxygenated blood

2.Consists of three distinct layers, which are thin and collapsible.

3.Peripherally located closer to the skin.

4.Blue in colour.

5.Carry blood towards the heart from the various parts of the body.

6.Low pressure, as the blood flows by the capillary action of the veins.

7.Comparatively low oxygen level.

8.The level of carbon dioxide is high

9.In upward direction from the body tissues to the heart.

10.Lumina is wide & Valves are present.

11.Veins are less susceptible to diseases such as varicose veins.

Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.

Explanation:

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Answer:

B) base

Step-by-step explanation:

Acids have a higher concentration of hydrogen ions. Bases have a higher concentration of hydroxide ions.

Answer:

Nutrition is the answer bcz without nutrition the diseases will effect more in a population

Answer:

 If both alleles are dominant, it is called codominance. The resulting characteristic is due to both alleles being expressed equally. An example of this is the blood group AB which is the result of codominance of the        A rose comb is produced when at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus (genotype R_ pp). A pea comb is produced when two recessive alleles are present at the first locus and at least one dominant  Dominant and Recessive Traits List 1． Widow’s Peak. Also known as mid-digital, hairline is a result of expression of the hairline gene. The gene contains 2 alleles: one for straight hairline, which is recessive and the other for widow’s peak, which is dominant.

Explanation:

i this good or do you need more i hope this this help

Answer:In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

Explanation:

Answer:

Equilibrium means when the concentrations of reactants and products are in an unchanging ratio. Another way of saying this is that a system is in equilibrium when the forward and reverse reactions occur at equal rates.

Explanation:

i hope this helps

Answer:

C alelos diferentes.

Explanation:

Los alelos son las distintas formas en las que un gen puede ser expresado. Cuando un gen es dialélico implica que puede haber dos formas diferentes del mismo gen, una dominante y otra recesiva. Estos alelos serán heredados de la línea parental en la que un progenitor aporta un alelo y el otro progenitor aporta otro alelo, que se combinaran durante la formación del cigoto. La combinación de alelos de un mismo gen en un organismo determina la forma en la que determinada característica será expresada en el individuo.  

• Cuando dos alelos iguales se combinan en un organismo, se habla de un genotipo homocigota. Estos alelos pueden ser los dos dominantes o los dos recesivos.  

• Cuando se combina un alelo dominante con uno recesivo, se habla de genotipos heterocigotos. El individuo que posea un genotipo heterocigota, portará ambos alelos pero expresará el fenotipo del alelo dominante.  

Answer:

b) is situated at 0 degrees

Explanation:

the equator is the latitude and it is like a rule in an equal-area map, when you put it horizontally at the center of the earth the rule is at 0 degrees but if you put it vertically at the center it is 90 degrees

and I just take the test, hope it helps :)

Answer:

b  is situated at zero degrees

Explanation:

Answer:

4

Explanation:

Answer:  three stages

Explanation:

Answer: There are three stages

Explanation: Cellular respiration occurs in the cells of all living things, both autotrophs and heterotrophs. All of them burn glucose to form ATP. The reactions of cellular respiration can be grouped into three stages: glycolysis, the Krebs cycle (also called the citric acid cycle), and electron transport.

Answer:

homeostasis!

Explanation:

Answer:

The body systems constantly interact with each other to maintain homeostasis.

Molecules of oxygen and carbon dioxide pass through the membrane via diffusion. However, polar molecules cannot easily pass through the lipid bilayer. They can reach the hydrophobic surface, but can't pass through the lipid layer to the other side of the membrane.

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Answer:

recombinant DNA

Explanation:

i took the quiz

Answer:

Recombinant DNA.

Explanation: This is the correct answer on Edge 2020 (just took the quiz and made a 100% ^-^).