Answer:
A hydrocarbon reacts with oxygen
Explanation:
The clue that can be used to identify a chemical reaction as a combustion reaction from the options would be if a hydrocarbon reacts with oxygen.
Basically, a combustion reaction is a kind of reaction involving oxygen and another reactant with energy being released in the process. The energy is usually in the form of light and heat.
Thus, following the definition:
Oxygen is rather a reactant, and may not be a product in combustion reactionsWater reacting with carbon dioxide is not a combustion reactionReaction involving ions may not be a combustion reactionThe only reaction that may identify as a combustion reaction is, therefore, the one involving hydrocarbon and oxygen.
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Age structure diagrams show the distribution of people of various ages. The diagrams also show the number of people in the prereproductive, reproductive, and postreproductive years. Research and note what else you can infer from age structure diagrams.
Answer:
Age structure diagrams show the following.
The height of the graph indicates life expectancy.
The width of the base shows birth and fertility rate.
The slope of the pyramid-shaped diagram indicates death rate.
Bends in the graph indicate reductions in birth rate or increases in
death rate.
The overall shape of the diagram indicates whether it is an economically developed country or not.
Explanation:
In a stable human population, the age structure diagram looks like a pyramid with a narrower base. The narrower base depicts that the birth rate is low. A stable human population also has a high number of older individuals. A greater number of older people in a population shows that quality of life is high in that area/country and the population has access to nutritional diet, medical care, and healthcare services. These features of the age pyramid in a stable population indicate a developed country. Age pyramids of underdeveloped countries have a wider base (high birth rate) and narrow tip.
nobody can answer this by their own part 1
what are the main principles of the natural selection?
Which phrase describes an extrusive rock
A.) Fine texture
B.) cooled slowly
C.) found deep underground
D.) different easily observed minerals
Answer:
fine texture
Explanation:
did it on edge
Fine texture describes an extrusive rock. thus option A is correct
What is rock cycle ?Rocks are formed naturally and it is the non-living earth made by collection of mineral grains held together in a firm, it can be tiny or big as well and can be easily identified with their texture.
The Rock cycle is a continuous process through where old rocks are transformed into new rock by a process of cool down of molten magma, when it solidifies become igneous rock.
In a rock cycle, when the break down of these igneous rocks occur small particles that are transported and deposited to form sedimentary rocks, When the igneous and sedimentary rocks heated up and under the pressure they change into metamorphic rocks.
The metamorphic rocks which are subjected under great heat and pressure melt down to form molten magma which again can cool down and solidify into igneous rocks
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Which statement gives an advantage of multicellular organisms?
They can perform more functions.
They can reproduce quickly.
Their size allows them to maintain structure easily.
One cell performs all of the necessary functions.
Answer:
D
Explanation:
Bacteria can reproduce quickly which is why it is sometimes hard to get rid of a cold.
Both types of cells carry out necessary functions to survive.
Size does not define a cell.
Multi-cellular organism have complex cell structure in which each cell has the ability to tend to it's necessary functions.
Hope this helps :)
difference between diffusion and osmosis
Answer: In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
Explanation:
What is the inside of an atom mostly made of?
Select one:
1
a. electricity
b. empty space
c. particles
The Answer Is "C"
Hope This Help's
What did Adam say when he saw Eve
The man said, “This is now bone of my bones, and flesh of my flesh; she shall be called woman, because she was taken out of man.”
Which of these organisms does NOT produce an enterotoxin?
a. Shigella spp.
b. Clostridium botulinum.
c. Vibrio cholerae.
d. Staphylococcus aureus.
Answer:
b. Clostridium botulinum.
Explanation:
The enterotoxins (also know as exotoxins when they are produced by bacteria) are polypeptides secreted by microorganisms that target the intestine. These toxins may produce serious damage to the host by disrupting the function of the epithelial intestinal cells Moreover, Clostridium botulinum is a Gram-positive bacterium that is able to produce a potent neurotoxin (botulinum) which is known to cause severe flaccid paralytic deformities in humans.
The organism that does NOT produce an enterotoxin among the options given is b) Clostridium botulinum. Clostridium botulinum is a bacterium known for producing botulinum toxin, which is a neurotoxin rather than an enterotoxin. It does not, however, create an enterotoxin.
The severe sickness known as botulism is brought on by the botulinum toxin, which predominantly affects the nervous system.
Although enterotoxins can induce diarrheal disorders and are linked to gastrointestinal symptoms, an organism need not produce an enterotoxin to be pathogenic. The host's sensitivity to infection and the infectious dosage are other important variables.
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What is the Density of an object with a mass of 20 grams and a
volume of 10 cmº?
what is the relationship between gens , cromosomes, and DNA
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
How many concepts or ideas makeup the modern cell theory?
Answer:
3
Explanation:
Answer:Three Parts of Cell Theory
Explanation:
All organisms are made of cells. Cells are the smallest unit of life. ...
Cells are the most fundamental unit of life. Organisms can be single cells, which hold all of the components necessary for a metabolism, or they can be more complex. ...
Cells come from other cells.
Pls help it’s due today
PLEASE HELP WILL GIVE BRAINLY which sequence of base pairs complements the base pairs on the left side of the dna molecule?
Answer:
B
Explanation:
Adenine forms a pair with thymine
Cytosine forms a pair with guanine
Which parasite completes their life cycle by mating, engorge from feeding, then dropping to the ground
to lay eggs in the environment?
Answer: Females
Explanation:
This is a molecule of glucose, a simple carbohydrate. If this molecule were broken down, would it provide all of the elements needed to assemble lipids, nucleic acids, or proteins? Use evidence from the diagram in your answer.
Answer:
The correct answer is - no.
Explanation:
Carbohydrates are made up of thee elements carbon, hydrogen, and oxygen so if the carbohydrate is completely broken down it will release these elements.
Lipids are made up of similar elements as glucose however, they also contain sulfur and phosphorus. Similarly for proteins and nucleic acid nitrogen, nitrogen sulfur, and selenium other than the elements released by glucose.
Thus, the correct answer would be - no.
The microbiome consists mostly of _____.
Answer: Bacteria, fungi, archaea, protists and viruses
Explanation:
The human microbiota does not include plants, but is composed of bacteria, fungi, archaea, protists, and viruses. Has two definitions: Microbiome (genetic) - The collective genome of the microbes living in and on our bodies.
which of these are claims of pseudoscience most likely based on?
A. Critical Thinking
B. Logical Reasoning
C. Controlled Experiments
D. Creative Imagination
Answer: I think the answer is creative imagination
Explanation:
The definition of pseudoscience is:
a collection of beliefs or practices mistakenly regarded as being based on scientific method.
Here is something I found online
A pseudoscience is a fake science that makes claims based on faulty or nonexistent scientific evidence. In most cases, these pseudoscience present claims in a way that makes them seem possible, but with little or no empirical support for these claims. Graphology, numerology, and astrology, are all examples of pseudoscience.
v. Why are mosses not found in places of little rainfall
water molecules are polar with the
Martin has a very low tolerance for alcohol- two beers and he's falling down drunk. this is likely at least partly linked to a small amount of which organelle in his cells? a) smooth endoplasmic reticulum b) lysosomes c) mitochondria d) rough endoplasmic reticulum e) Golgi apparatus
Answer:
is it okk
Explanation:
The lysosomes are the cellular organelles containing the hydrolytic enzymes which help in the metabolism of the complex and toxic compounds. The alcohol which is consumed is degraded and digested by the lysosomes which decrease the rate of digestion of the other complexes like the proteins. This decreased lysosomal activity leads to liver damage.
here is your answer
Which molecule has the lowest potential chemical energy?
Answer:
i have the same question too?
Explanation:
Chemical potential energy is defined as the energy present or stored in the chemical bonds of a substance. The decreasing order of the molecules with chemical potential energy is solid, liquid, and gas.
The correct answer is:
Option B. Carbon dioxide
The chemical potential energy can be explained as:
1. ATP and NADH are the energy currency of the cells, such that these molecules yield energy when the bonds are broken down.
2. Glucose is a solid compound that will have a high chemical potential energy as compared to carbon dioxide.
3. Carbon dioxide is a gaseous compound that will have the least chemical potential energy as compared to ATP, NADH, and glucose.
Thus, carbon dioxide will have the least potential chemical energy.
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What causes sediments to stick together and become sold rock?
A. Fossils
B. Soil texture
• C. Pressure
D. Humus
Answer:
C. pressure is correct
Explanation:
Which of the following is a nucleotide found in DNA?
Answer: The four nitrogenous bases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.
Explanation:
Hopefully this helps you.
Explain the need for a reference point when describing the direction of motion
Answer:
It is important as it tells if the object is stationary or in motion
Explanation:
What family is potassium
Answer:
s block
Explanation:
representative element family of metals
What is a difference between an authoritarian government and a democratic government? A) In authoritarian governments, the people rule. B) In authoritarian governments, many have power. Eliminate C) In democracies, the power of the government is limited. D) In democracies, government officials gain power through force. What is a difference between an authoritarian government and a democratic government? A) In authoritarian governments, the people rule. B) In authoritarian governments, many have power. Eliminate C) In democracies, the power of the government is limited. D) In democracies, government officials gain power through force.
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how new technology and experimental methods can lead to changes in theories.
Answer:
New findings and new evidence about a scientific theory can change the aspects of this scientific theory and in some cases, it can be proved as wrong or can be supported by more strong evidence that can prove its liability.
New technology allows scientists and researchers to study various untouched aspects and leads to find new evidence to support or prove the theory can be either change or unproven.
Thus, new technology and experimental methods can lead to changes in theories.
Which is a difference between proteins and carbohydrates and fats?
Which of the following is a synonym (word with a
similar definition) for the word degradation, used
in line 8 of the passage?
a. health
b. ruin
c. gradation
d. evaluation
Answer: B ruin
Explanation: Because i looked it up on QUIZLET !