At room temperature, dry ice (carbon dioxide, CO2) changes directly from solid to gas. What happens as the solid dry ice turns into carbon dioxide gas?
A.CO2 molecules lose mass to become gas.
B.CO2 molecules release heat energy to the air.
C.CO2 molecules absorb heat energy from the air.
D.CO2 molecules react with oxygen and become gas.
Answer:
A
Explanation:
Carbon dioxide is a gas at room temperature.
When the solid dry ice turns into carbon dioxide gas, the carbon dioxide molecules release heat energy into the air. Thus, the correct option for this question is B.
What happens when the solid dry ice turns into carbon dioxide gas?When the solid dry ice turns into carbon dioxide gas, the process of sublimation occurs. This process of sublimation significantly converts the dry ice into a gas in the form of water vapor.
It may be revealed that dry ice is known for carbon dioxide in its solid state of matter. The unique property of this dry ice is that it ultimately turns from a solid to gas at room temperature. This is because it provokes water vapor in the air to be condensed into droplets of water thus constructing a fog appearance.
Therefore, the molecules of carbon dioxide release heat energy into the air. Thus, the correct option for this question is B.
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How is a high rate of reproduction beneficial to a species?(1 point) It prevents extinction because there are so many individuals.
It prevents extinction because there are so many individuals.
It ensures that at least a few individuals will survive to pass on their traits.
It improves fitness over time versus species with slower rates of reproduction. I
It leads to faster evolution and passing on of traits. It leads to faster evolution and passing on of traits.
High rate of reproduction is beneficial to a species because it ensures that at least a few individuals will survive to pass on their traits.
What is reproduction?Reproduction is the biological process whereby living organisms replicate themselves by producing offsprings.
High rate of reproduction means that organisms produce excessive number of offsprings.
Therefore, high rate of reproduction among organisms is beneficial to a species because it ensures that at least a few individuals will survive to pass on their traits.
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Differential Reproduction Quick Check:
1. (D) resource partitioning
2. (D) competitive exclusion
3. (D) A population of deer show
4. (C) elephants are being born
5. (A) it ensures that at least a few
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What seasonal change can be seen in Florida birds during the fall?
A. Birds begin to store food and go dormant
B. Birds begin to store food and hibernate
C. Birds migrate further north to colder locations
D. Birds migrate further south to warmer locations
The answer will be:
D. Birds migrate further south to warmer location.
Answer:
B birds begin to store food and hibernate
Explain the environmental benefits of recycling paper products.
No links please
Answer:
Paper recycling saves natural resources, saves energy, reduces carbon dioxide emissions, and keeps landfills free for other types of waste that cannot be recycled. Recycling
1 ton of paper saves 17 trees, 7,000 gallons of water, 380 gallons of oil, 3.3 cubic feet of landfill space, and 4,000 kilowatts of energy. Greenhouse gas emissions Carbon equivalent (MTCE).
Explanation:
When the skin comes in contact with an irritant, receptors in the skin send signals to the spinal cord. The signal is then sent to the brain for processing, and the individual begins to scratch the affected area. Which two systems are most likely interacting when a person experiences itching caused by a skin irritant?.
Peripheral nervous system and Central nervous system are most likely interacting when a person experiences itching caused by a skin irritant.
What is Central nervous system?This is the control center of the nervous system and comprises of the brain and spinal cord.
The Peripheral nervous system comprises of sense organs such as the skin. The receptors in the skin sending signals to the spinal cord mean the interaction between Peripheral nervous system and Central nervous system.
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The image below shows plant cells.
plant cells
What feature of cells is best demonstrated in the image?
A.
Cells are formed from other cells within the same tissue.
B.
Cells are the basic units of structure and make up tissues.
C.
All organisms are made up of a large number of cells.
D.
All organisms have cells with different shapes and functions.
Answer:
c.
Explanation:
The image shown in the question shows that organisms are made up of large number of cells. Living organisms constitute different types of cells.
hello people ~
Potable water is
(a) ocean water
(b) groundwater at selected places
(c) river water
(d) ponds water
Answer:
Ground water
Explanation:
Potable water refers to drinkable water or water which is safe to drink
Ocean water is salty not drinkableRiver water may be impurePonds water may be dusty so impureOption B is correct
You are looking at a specimen under the microscope, what would you use to adjust the light being focused in on the slide?.
Condenser Lens is located under the stage which is responsible for focusing the light on the specimen.
What is Condenser Lens?The condenser lens collects light from sources and redirects the light beam so that it falls on the projector's lens system.
So we can conclude that condenser Lens is located under the stage which is responsible for focusing the light on the specimen.
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It’s acceptable if your conclusion does not support your hypothesis. true false
Answer:
True! Your hypothesis is a fancy way of saying it's a guess. Your conclusion could be the same or completely different.
Explanation:
Does this help you???
If your conclusion does not support your hypothesis. this is false as hypothesis means explanation.
If the statistics constantly do now no longer aid the speculation, then CLEARLY, the speculation is NOT an affordable clarification of what you're investigating. The speculation is rejected, and we look for a brand new interpretation, new speculation that helps the experimental statistics.
What happens when speculation fails?
When speculation fails, the primary issue you ought to do is look at the statistics closely. Then use your studies and statistics to decide a likely cause why the speculation changed into incorrect. Once you give you a cause your speculation can also additionally have failed, you could begin deliberating approaches to test your assumption.
Thus it is clear that if your conclusion does not support your hypothesis this is false.
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Which abiotic component of its ecosystem did the owl in the picture above use to build a safe nest?
OA. air
OB. rocks
OC. trees
Answer:
The answer is rocks
Explanation:
Abiotic factors are nonliving, and biotic factors are living or once living. The tree twigs were once living, and the air wasn't used, so the rocks are the only answer left.
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Biologists tell us that life on earth took billions of years to evolve into astronomy students and other examples of intelligent life. If we want to search for planets with intelligent life-forms that evolved over the same period of time that we did, what sorts of stars should we not bother searching around?.
The types of stars that we should not search for life around the Universe are O and B type stars.
What is a star?A star is a celestial body capable of producing huge amounts of heat and radiation in the form of light.
An O-type star (spectral class O) is a blue and/or white star that is characterized to be very hot and brilliant.
B-type stars are also luminous and they can be blue, but they can be differentiated by O-type stars by their spectra.
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Which of the following relationships is symbiotic?
A group of ants work together to build an underground nest.
A tick latches on to the body of a dog and feeds on the dog's blood.
Abee pollinates a flower while feeding on the flower's nectar.
A remora attaches to the body of a shark and feeds on scraps when the shark eats.
Two male red-winged blackbirds fight over territory.
A male bluebird and a female bluebird provide care for their offspring.
The storage polysaccharides are ________ in plants and ________ in animals.
Answer:
I think it's
The storage polysaccharides are starch in plants and glycogen in animals.
Which of the following is required for photosynthesis to take place? a. sugar b. oxygen c. atp d. water please select the best answer from the choices provided a b c d
The answer will be :
D. water.
Water, is required for photosynthesis to take place.
How does photosynthesis work in plants?Photosynthesis is the process of creating sugar and oxygen from carbon dioxide, water and sunlight. It happens through a long series of chemical reactions.
But it can be outlined like this Carbon dioxide, water and light go in. Glucose, water and oxygen come out.
Thus, Water, is required for photosynthesis to take place.
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Synovial joints ________. Group of answer choices are joints where the bones articulate with each other within a fluid-filled joint cavity are joints where the bones are connected to each other by hyaline cartilage may be functionally classified as a amphiarthrosis may be functionally classified as a synarthrosis
Answer:
are the most common type of joint in the body (see image 1). These joints are termed diarthroses, meaning they are freely mobile. A key structural characteristic for a synovial joint that is not seen at fibrous or cartilaginous joints is the presence of a joint cavity.
In these analyses, why are segments of chromosomes (haplotypes) rather than individual strs used to identify genetic relationships?
The type of analysis is not specified here, but haplotypes are used to identify phylogenetic and phylogeographic relationships.
Whta are haplotypes?The haplotypes are linear sequences of nucleotides whose order can be used to determine evolutionary relationships.
The haplotypes are very useful in phylogeny and phylogeography to study the features of species.
The term haplotype is broader than genetic sequence because a haplotype is more informative (a priori).
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The segments of chromosomes (Haplotypes) are used to identify genetic relationship because it carries almost all the information, properties, and characteristics of the individual genome.
What do you mean by Genetic relationship?Genetic relationships may be defined as the similarities in the sequence of the genome between the organisms of two or more species.
Haplotypes are used to identify the evolutionary relationships between the species. It also analyzes the various features that a species possess in its genome.
Therefore, it is well described above.
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Which statement best describes the overall function of the human
respiratory system? *
Mark only one oval.
The heart pumps blood containing carbon dioxide into the lungs, where it is
absorbed
Oxygen is transferred into the blood, which circulates the gas throughout the body
Oxygen is taken into the lungs and exchanged for carbon dioxide, which is exhaled
Carbon dioxide is taken into the lungs and exchanged for oxygen, which is absorbed
Answer:
oxygen is taken into the lungs and exchanged for carbon dioxide which is exhaled
why argon is called inert element?
Answer:
Helium neon and Argon are called inert gases are noble gas because they have complete its duplet as well as Octate. and no other element like Helium neon and Argon complete its octate and duplete. in the 18th period all element are inert. Which gas does not exist in air?
Explanation:
Answer:
The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert.
Each biome has its own climate? question 2 options: true false
Answer:
True!
Explanation: I took the test.
In a DNA molecule, ______ bonds form between nitrogenous bases, such that A (adenine) pairs with its complement ______, and G (guanine) pairs with its complement ______.
In a DNA molecule, hydrogen bonds form between nitrogenous bases, such that A (adenine) pairs with its complement T (thymine), and G (guanine) pairs with its complement C (cytosine).
In the above Hydrogen bond, A (adenine) pairs with T ( thymine) while G (guanine) pairs with C (cytosine).
What is DNA molecule?DNA molecule is a type of nucleic acid that is found in living cells. DNA is an acronym for deoxyribonucleic acid. The chromosomes is contained within DNA molecule, it carries hereditary information which can be passed from parent to offsprings.
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Explain how the VIH virus uses specific structures to enter the cell
Answer:
When HIV infects a cell, it first attaches to and fuses with the host cell. Then the virus uses the host cell's machinery to convert the viral RNA into DNA and replicate itself. The new copies of HIV then leave the host cell and move on to infect other cells.
In which situation would calcium enter the cell through active transport?
O The cell is 20% calcium, and the cell's environment is 80% calcium.
O The cell is 50% calcium, and the cell's environment is 50% calcium.
O The cell is 40% calcium, and the cell's environment is 60% calcium.
O The cell is 80% calcium, and the cell's environment is 20% calcium.
The cell is 80% calcium, and the cell's environment is 20% calcium for active transport to take place.
What is Active transport?
This is defined as the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration against the concentration gradient.
Option D involves movement of calcium into the cell from the environment which has a lower concentration to the cell with a higher concentration which depicts active transport .
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The influx of which ion is directly responsible for triggering the release of acetylcholine from a motor neuron?.
Answer:
The influx of which ion is directly responsible for triggering the release of acetylcholine from a motor neuron? When an action potential from a neuron reaches an axon terminal, voltage-gated calcium channels open. The influx of calcium triggers exocytosis of acetylcholine.
It is a cold winter day in Boston with a temperature of −7° C (19° F) and forecast of 3 cm of snow. How do the weather conditions determine the possibility of snow?
A) It is a cold winter day, and it snows every day in the winter.
B) It is winter, and the temperature is well above freezing, causing snow.
C) It is winter, and the temperature is well below freezing, making snow likely.
D) Snow is expected to fall at temperatures at or above freezing.
Answer:
The answer to this question would be D!
Answer:
C
Explanation:
C
snow is a form of water with freezing point 0 degrees
What is the shape of DNA when it is not undergoing replication?
A.Double Helix
B.Circular
Answer:
B.circular
Explanation:
Which of the following happened partly in response the fire on the Cuyahoga River? Select two correct answers.
A)Rachel Carson wrote silent spring to detail the damage done by the fire. B)The location of the fire was declared superfund site. C)Congress passed the Clean Water Act into law. D)The national environmental policy act was passed, which led to the formation of the EPA
Answer:
- Congress passed the Clean Water Act into law.
- The National Environmental Policy Act was passed, which led to the formation of the EPA.
Explanation:
The following happened partly in response the fire on the Cuyahoga River are Congress passed the Clean Water Act into law. D)The national environmental policy act was passed, which led to the formation of the EPA.
Which river was caught on the fire?When Lake Erie – or extra precisely the Cuyahoga River which flows into Lake Erie – stuck hearthplace in 1969, it ignited a firestorm of public outrage over the indiscriminate dumping of sewage and commercial chemical compounds into the Great Lakes.
The 1969 river hearthplace stimulated the advent of the EPA and Clean Water Act. Catch up at the growing fire making headlines. Fish stuck withinside the Cuyahoga River, well-known for catching hearthplace withinside the Sixties at the moment are secure to eat, says the Ohio Environmental Protection Agency.
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What will happen if Mars was not closer to the sun?
Answer:
It would not affect Earth at all, but Mars would be colder and dark most of the time, like the planets far away from the sun.
Explanation:
Answer:
Mars is already a cold planet but if it moved farther to the sun, it would mess up all of the other planets' orbit.
What is the renewability of nuclear power?
It is a nonrenewable energy source.
It can use the same fuel cells repeatedly.
It is an unlimited, clean energy source.
It can be replenished, but not by fusion.
Answer: A
Explanation:
Answer: It can be replenished, but not by fusion.
Explanation:
Document 6: the geography of japan sample response: both england and japan were island nations and, as a result, were easily defendable. they both had many ports and good access to the ocean. both were commercial powers and had strong navies. which of these ideas did you include in your response? select all that apply. both were island nations. both had strong navies. both were strong commercially. both were physically small. both had many ports and good access to the ocean and trade.
Both were island nations and had strong navies.
Both were strong commercially and had many ports and good access to the ocean and trade.
Geography of England and JapanBoth England and Japan were island nations because both are surrounded by water. Both had strong navies due to advance in technology.
Both were strong commercially and economically due to production of large number of goods which make their economies very strong. Both countries had many ports and good access to the ocean and trade which make them a strong economic power.
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Answer:
A,C,E or 1,3,5
Explanation:
What effect does the Continental Divide in the United States have on water runoff?
Answer:
It separates the water that runs toward the Pacific Ocean from the water that runs toward the Atlantic and Arctic Oceans and the Gulf of Mexico.