Answer:
i) Rusting occurs the least in tubes 2 and 3 because either of air and water which are necessary for rusting is absent in the two tubes respectively.
ii) Rusting occurs most in tube 1 because both air and water which are necessary for rusting are present.
Explanation:
Rusting is a chemical change which involves a redox reaction. During the process of rusting, metallic iron is oxidized to hydrated iron (iii) oxide by oxygen present in air.
For rusting to take place effectively, each of these three factors mist be available: metallic iron, oxygen and water.
In the figure above, the iron nails in the three tester tubes will rust to different extents based on the availability of the three factors.
In test tube 1, the iron nails will rust the most because all the three factors: metallic iron, oxygen present in air, and water are abundantly present.
In test tube 2, the iron nails will rust the least or not at all because boiling of water removes dissolved oxygen from water and the oil layer above the boiled water prevents entry of oxygen from air. Thus, the nail do not rust because one of the three factors for rusting to take place, in this instance, oxygen is absent.
In test tube 3, the iron nails rusts the least or not at all as well because moisture or water is absent. Calcium chloride, a drying agent removes all the moisture from inside the tube. Hence, even though air is present, rusting do not occur as there is no moisture or water present.
Two children and their dog are outside. The children are skating, and the dog is eating. It begins to rain, and the children and dog rush inside so quickly that it causes them to breathe more rapidly. When they are inside, the children dry their hair using towels, and the dog dries it's fur by shaking it's fur.
Look at the list of actions below:
1. The children skating
2. The dog eating
3. The children breathing more rapidly
4. The dog breathing more rapidly
5. The children using towels to dry their hair
6. The dog shaking it's fur to dry it's fur
Which actions best represent inherited behaviors?
A - 2,3,4,6
B - 2,4,6
C - 1,5
D - 1,2,3,4,5,6
Which of the following could be reasons why population sizes may reach and maintain plateaus? Select the three (3) that apply.
Answer:
limits in food supply
competition with other species
competition for space
Don't fail me now brainly!!!!
21. For each of the following, state the type of input energy and the useful output
energy.
a. battery
b. gas-powered weed-eater
c. bedside lamp
d. horn on a bicycle
Input Energy
Useful Output Energy
4
Battery
Gas-Powered Weed-eater
Bedside lamp
Horn on a bicycle
Answer:
Explanation:
if you get the nintindo 64 throw it out a window then call the garbage man hit the folks den shake his hand he will give you the math answer and you have to cll hm on the newest flip phone out right now
what is a genotype
A.)an organism's combination of genes for a trait
B.)the collection of dominant genes in an organism
c.) the ratio of dominant to recessive genes in an individual
D.) an organism's appearance as a result of its genes
Answer:
The answer is B
Explanation:
because that contains dominant genes
What information did you include in your response? Multiple Choice
A. Crossing over is the process by which genetic material is exchanged by non-sister chromatids during meiosis.
B. Crossing over results in a new combination of genetic information for the cell for a specific trait.
C. Crossing over ensures that organisms are not identical from generation to generation.
D. Genetic recombination allows for a variation in genetic material that is passed through the generations.
Only you can answer this unless the last response is given.
Answer:
click any answer and it will be correct
Explanation:
What are some nonlethal solutions to the problem of wolves attacking cattle and sheep?
Answer:Fences, loud alarms, and keeping animals in a safe space
Explanation:
If the temperature decreases to less than the surrounding environment, it will indicate that the atmosphere is unstable.
True
False
double checking
[extra characters]
Which diagram number below represents the liquid layers in the cylinder?
(K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL). Support your answer with a brief explanation.
Answer:
Diagram 1
Explanation:
The correct diagram that depicts the liquid layers in the cylinder would be diagram 1.
The density of a substance is a measure of how heavy the substance is. Hence, a liquid that is heavier than water (with higher density) would sink in water while a liquid that is less dense than water would float on it.
Therefore, based on the density of the karo syrup (1.4 g/mL), it would take the bottom space in a cylinder, followed by water (1.0 g/mL) while vegetable oil with 0.91 g/mL would float on the former two.
The correct diagram is 1.
An example of something that can be used to support the theory of evolution. Explain.
Which genotype below is written correctly?
A.) AaAP
B.) pApr
C.) IlYy
I WILL MARK BRAINLIEST
Answer:
false
Explanation:
resources from the earth are natural resources
How is the availability of needed natural resources affected by human activities?
Answer:
Humans take natural resources for things such as manufacturing oil, building, making plastics, etc. For example, harvesting trees to cut and make planks of depletes the Earth of a necessary resource for filtering oxygen.
Numerous human activities such as overpopulation, pollution, the burning of fossil fuels, and deforestation have an adverse effect on the physical environment.
What are natural resources?Natural resources are those resources that we get from nature. These resources are free, but they are not available for a lifetime.
The availability and quality of natural resources have been significantly impacted by human activity. Petroleum products are daily used in enormous quantities by companies and cars.
Around 40% of the electricity in the world is produced by coal-fired power plants. The reserves of these finite resources are being depleted by the extensive usage of fossil fuels.
Therefore, climate change, soil erosion, poor air quality, and undrinkable water have all been brought on by changes like these.
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All of the white-taied deer in a forest make up
a. An ecosystem
b. A population
c. A community
d. A food chain
Which of the following statements is false?
a. Performing a cross to produce an F1 generation can be used to show if an allele is dominant.
b. The F1 generation is always hybrids.
c. An F1 cross produces an F2 generation.
d. All of the offspring of a cross may exhibit the same trait.
Answer:
d
Explanation:
cannot be same if they produce f2 will take time to be the same!
Thank you!
The correct answer is d. All of the offspring of a cross may exhibit the same trait as it is only in purebred.
The phenomenon of dominant phenotypes springing up from the allele interactions exhibited on this go is called the precept of uniformity, which states that every one of the offspring from ago in which the mother and father fluctuate through best one trait will seem identical.
What are Inherited traits?Inherited traits tendencies encompass matters along with hair color, eye color, muscle structure, bone structure, or even functions just like the form of a nose. Inheritable tendencies are tendencies that get exceeded down from era to the subsequent era. This would possibly encompass such things as passing pink hair down in a family.
Thus it is clear that All of the offspring of a cross may exhibit the same trait is false.
To know more about Inherited traits refer to the link :
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What is organism? Please give me a good answer
Answer:
An organism is a living thing or single celled life form that has an organized cell structure, responds to stimuli, reproduces, grows, adapts and maintains homeostasis. It is capable of carrying on life functions .
Explanation:
5. Below shows the model of a water particle. Which of the following
statements about a water particle is incorrect?
oxygen
atom
hydrogen atoms
-A. It is made up of two hydrogen atoms and one oxygen atom.
-B. It is made up of two kinds of molecules.
-C. It is larger than an oxygen atom.
-D. It is also called a water molecule.
Answer:
C
Explanation:
A water molecule the the combination of 1 oxygen atom and 2 hydrogen atoms hence option C is untrue
Carrying capacity is
A.anything that limits how many organisms can live in an ecosystem.
B.how green plants make carbohydrates.
C.the process of respiration.
D.the number of organisms an ecosystem can support.
Answer:
d
Explanation:
d
Which is not included in a niche that a
species occupies?
A. the habitat that the species lives in
B. the diet of the species
C. the species' step on a food web
D. the population size of that species
Distinguish between gaseous exchange and respiration
Answer:
Respiration is the process in which food is oxidized to release energy. Complex organic compounds are converted into simpler ones, e.g glucose into CO2 water and energy released. Gaseous exchange is the diffusion of gases from a region of higher concentration to a region of lower one.
Explanation:
Breathing is the physical process by which air is passed on a gaseous exchange surface i.e. ventilation of the gaseous exchange surface. It involves Inhalation and Exhalation.
Gas/Gaseous exchange is the process whereby gasses diffuse across a gaseous exchange surface. In humans, oxygen diffuses from the inhaled air into the blood and carbon dioxide diffuses from the blood into the exhaled air. The gaseous exchange surface here being the Alveoli.
Respiration is the metabolic process whereby organic molecules are broken down to release energy in the cells. In humans, this process takes place inside the mitochondria of cells. Aerobic respiration requires oxygen whereas qnqerobic respiration takes place in absence of oxygen.
Help me plssss I think it’s option D
Answer:
yes d is the answer...
please make me brainlieast..and follow. me
Matthias Schleiden and Theodor Schwann made which contribution to science?
A. Discovered that new organisms do not spontaneously arrive in suitable conditions, but must be brought there.
B. Discovered the process plants use for energy, photosynthesis.
C. Discovered a basic principle of chemistry, that all matter is composed of atoms.
D. Discovered a basic principle of biology, that all plants and animals are made of cells.
Matthias Schleiden and Theodor Schwann made a significant contribution to science as they discovered a basic principle of biology, that all plants and animals are made of cells. So the correct option is option D.
Matthias Schleiden and Theodor Schwann made the contribution of discovering a fundamental principle in biology known as the cell theory. In the 1830s, they independently proposed that all plants and animals are composed of cells. Their work laid the foundation for our understanding of the structural and functional units of life. Together, the contributions of Schleiden and Schwann formed the basis of the cell theory, The correct option is option D.
Learn more about the cell theory here.
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What replaces peptidoglycan in the cell wall of Archaebacteria?
Answer:
S-layers
Explanation:
What form is DNA in during mitosis?
A. protein
B. ribosome
C. chromatin
D. chromosomes
Answer:
Chromosomes form is DNA in during mitosis.
Explanation:
In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes.
During mitosis, DNA is in the form of chromosomes, which is option D, as the chromosomes are condensed and highly coiled structures made up of DNA and associated proteins called histones.
During mitosis, a cell divides into two daughter cells that are genetically identical to the parent cell. Chromosomes are critical to this process because they carry the genetic information necessary for the formation of the new cells, and before mitosis begins, the chromatin (a complex of DNA and proteins) in the nucleus of the cell condenses into visible chromosomes. This condensation process involves the compaction of chromatin into a more compact and organized structure.
Learn more about the chromosome here.
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What plasma membrane component can be either found on its surface or embedded in the membrane structure?
Answer:
Carbohydrates. Carbohydrates are the third major component of plasma membranes. They are always found on the exterior surface of cells and are bound either to proteins (forming glycoproteins) or to lipids
¿Qué tipo de célula apareció primero en la Tierra?:___, y se presentan en seres vivos como las:___ y se caracterizan porque:___. *
Answer:
Célula procariota y procariotas.
Explicación:
La célula procariota es un tipo de célula que apareció por primera vez en la Tierra hace unos mil millones de años. Estos tipos de células están presentes en los procariotas, lo que significa que estos organismos no tienen un núcleo verdadero o una membrana nuclear alrededor del núcleo y otros orgánulos de la célula. El ADN del organismo procariótico se encuentra en una parte central de la célula que se conoce como nucleoide. La pared celular de un procariota actúa como una capa adicional de protección, ayuda a mantener la forma y estructura celular y previene la deshidratación.
what effect will an invasive species have on the carrying capacity of an ecosystem?
a) the carrying capacity will increase for those in competition
b) the carrying capacity for all animals will stay the same
c) the carrying capacity for everyone will decrease and then increase rapidly
d) the carrying capacity will decrease for those in competition for same resource
The effect an invasive species will have on the carrying capacity of an ecosystem is the carrying capacity will decrease for those in competition for same resource.
What is invasive species?An invasive species refers to an organisms such as amphibians,plant, insect, fish, fungus, bacteria that is not native to an ecosystem but it is introduced into the ecosystem and causes harm to the native species. They can harm the environment and also humans.
Therefore, The effect an invasive species will have on the carrying capacity of an ecosystem is the carrying capacity will decrease for those in competition for same resource.
Learn more about invasive species below.
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Viruses can't replicate without a host cell.
A. True
B. False
Answer:
True
hope this helps
have a good day :)
Explanation:
Viruses cannot reproduce by themselves, they must have a living host cell in order to multiply.
The data table below shows the presence or absence of DNA in four different cell organelles.
Information in the table suggests that DNA functions
A. within cytoplasm and outside of the cell membrane
B. both inside and outside of the nucleus
C. only within energy-releasing structures
D. within cell vacuoles
What is the main function of the nervous system? How does it do its main job? (USE YOUR OWN WORDS)
Answer:
The nervous system is the major controlling, regulatory, and communicating system in the body.
Explanation:
It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis.
