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Related Questions
Earth's early atmosphere was primarily composed of
hyrogen cyanide and carbon monoxide.
oxygen and carbon monoxide.
oxygen and water vapor.
carbon dioxide, water vapor and nitrogen.
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Answer:
The correct answer is ''carbon dioxide, water vapor and nitrogen.''
Explanation:
About 4.5 billion years ago, Earth was a very geologically active planet. So many volcanic fumes formed the primitive atmosphere, which was mostly made up of water vapor, carbon dioxide, sulfur, and nitrogen. At this point, oxygen was barely present and the oceans did not yet exist. The primitive atmosphere is the one before the Precambrian, it was reductive, that is, it lacked free oxygen, and only had ammonia, methane and hydrogen, the high temperature of the atmosphere in its early stages facilitated the reaction of these gases to form organic compounds from which life may have emerged. UV rays passed, because ozone did not exist.
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Based on the Nebular theory, which of these is a step in the formation of the center of a new planetary system?
A. evaporation of condensed gases due to heat
B. combination of condensed gases due to gravity
C. contraction of condensed gases due to nuclear fission
D. expansion of condensed gases due to nuclear fission
Answers
Answer:
The answer is the evaporation of water. As the gas begins to collapse, thermonuclear fusion as a result of the immense gravity at the center of the cloud results in the generation of immense heat and radiation that turns solids and liquid into gaseous form, close to the center of the cloud.
Explanation:
This resulted in the nuclear fusion of gases and dust to create the sun and planets at the outer flattened portion of the disk." The sun forms in the center of the cloud since the gravitation effect that drives thermonuclear fusion are strongest in this region. Planets form in the outer regions of the accretion disks where matter attract each other into clumps and gain even more gravitational pull to yank even more matter.
Hope this helps.
Answer:
A: evaporation of condensed gases due to heat.
Explanation:
Here are the 6 steps:
Nebula, protosun forming, spinning planetary disk, protoplanets forming,
Shock waves from a nearby supernova explosion.
It also begins to flatten.
Protosun.
When the gravitational forces begin to fuse hydrogen into helium (fusion)
Protoplanets.
Inner protoplanets - most of their lightweight gases are boiled away
The last step is the answer.
Just like you and me, bacteria cells are under constant attack by
A. antiseptics
B. white blood cells
C. viruses
D. all the above
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Answer:
C. Viruses
Explanation:
Genes influence an organism's traits by coding for ?
A:
Cells
B:
Proteins
C:
Chromosomes
D:
DNA
Answers
Genes influence an organism's traits by coding for proteins. Therefore, option B is correct.
What are genes?Genes are segments of DNA that hold the instructions needed to create a single, usually protein-producing, molecule in your body. These proteins regulate how our body develops and functions; they are also in charge of determining many of our physical traits, like our eye color, blood type, and height.
the information connected to a certain characteristic of the organism is encoded by these on the strands of genomic material; the entire strand of DNA or RNA is made up of numerous genes, each of which contains information. DNA is converted into RNA and then RNA is converted into protein.
Genes influence an organism's traits by coding for proteins. Therefore, option B is correct.
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what is the percentage of calories were absorbed by your system??? Helpppp
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What do the relative sizes of the boxes represent
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Explanation:
The relative sizes represents that died at that certain spot. 2.Is the concentration and size of boxes the same at all locations on the map
In what type of countries do most nervous system disorders occur?
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Answer:
Most nervous system disorders usually occur is Sub-Saharan Africa
Explanation:
Hope this helps!! :)
What does the Serengeti ecosystem smell like?
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Answer:
Everywhere you look, the world is truly wild, in a way that's just breathtaking. What does it smell like? You wouldn't think it would be noteworthy, but the whole Serengeti smelled clean. Fresh, kind of, with just a trace of dust on the wind.Explanation:
(07.02 LC)
Which statement identifies the cause for thermal pollution in a lake?
A boater fueling his boat from the dock on the lake
A child feeding bread to fish near the shore
Flood irrigation methods utilized by farmers
People swimming in the lake near the shore
Answers
Answer:
A
Explanation:
Thermal pollution is a type of pollution that occurs as a result of changing the temperature of the lake
the fuelling process increases the temperature of the lake
How do laws reduce air pollution?
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Answer:
Laws reduce air pollution by a number of things, this could be by issuing a fine of about £20 or above. This is the most common way yet im sure in more serious cases prison sentences are issued.
Which is a characteristic that distinguishes members of the
plant kingdom from members of the animal kingdom?
Select one:
A. Plants store genetic information in the nucleus of their cells
B. Plants are motile primary consumers
C. Plants are multicelular
D. Plants are autotrophic
Answers
Answer:
D. Plants are autotrophic
Explanation:
Both plants and animals are eukaryotic, meaning they contain a nucleus with genetic information, so that crosses out A. I don't know what motile primary consumers are. Assuming, they're primary consumers, primary consumers are those that eat producers, so in this case, this would elminate B. Both plants and animals are multicellular. Plants ARE autotrophic, meaning they produce their own food. Animals, however, have to get their own food, either by hunting or scavaging.A hawk eats small rodents such as mice and
chipmunks. It has no natural predators in the
ecosystem shown here. Which empty box in the
food web above represents a hawk?
A. B.
B. A
C. D
O D. C
Answers
B represents the hawk
Determine which are true of prokaryotic and eukaryotic transcription. In prokaryotic cells _____________; in eukaryotic cells ______________.
Answers
Answer:
This question is not complete as it lacks options. However, it can be answered by giving the general differences between eukaryotic and prokaryotic transcription.
Explanation:
Eukaryotes are organisms that possess a membrane-bound nucleus that harbors their genetic material while prokaryotes are organisms that lack a membrane-bound nucleus.
Transcription is the process whereby a DNA template is used to produce an mRNA molecule. Below are the common differences in the transcription of eukaryotic and prokaryotic:
- Transcription in eukaryoric cell occurs in a NUCLEUS while transcription in prokaryotic cell takes place in a CYTOPLASM
- Transcription in eukaryotic cell requires proteins called TRANSCRIPTION FACTORS while transcription in prokaryotic cell does not require TRANSCRIPTION FACTORS.
- Transcription in eukaryotic cells occurs differently from translation while transcription in prokaryotic cells is coupled with translation i.e occur simultaneously.
Which option identifies the information that could best help the grower complete the estimate of harvest date in the following scenario?
Burt is grower and must make the arrangements for harvesting and shipping a crop weeks before the plants can reach maturity. He must make an estimate of likely maturity date based on known and predicted information. Burt knows the base temperature of the crop, the specific daily GDD units of the season to date, and the total GDD necessary before the plants can be ready for harvest.
ten-day weather forecast from a website
full-year weather forecast from an almanac
average daily highs and lows for the upcoming months
estimated number of days from planting to maturity
Answers
Answer: full-year weather forecast from an almanac
Hope this helps!!
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Answer:
average daily highs and lows for the upcoming months
Explanation:
did it and just got it right
Will give brainliest... Why does a population not level off during the same year it reaches zero population growth?
Answers
Answer:
Because parents will still be living for decades. What factors contributed to the world's overall population growth in the last 150 years? Having ample food, shelter, water, and technology.
Explanation:
Hope it helps u
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How long did the cicadas in the video live underground?
O A. 17 days
O
B. 7 months
O
C. 7 years
O
D. 17 years
Answers
Answer:
D. 17 years
Explanation:
if you were in 2004 cicadas were around that time. 2004 to get to 2021 is 17 years so its D
hope this helped
How have some rainforest plants adapted to receive enough sunlight? O by growing poisonous flowers O by growing giant, slippery leaves O by growing giant, bright flowers O by growing long, deep roots
Answers
Answer:
Well, one type of adaptation might be for a vine, lets say grows high into the canopy. It benefits from growing high up, so it can get more sun than growing below. Growing poisonous flowers are a protection from animals eating the fruits that the plants grow.
Explanation:
Which kind of division of time on the geologic time scale has the name
Pleistocene?
Answers
Answer:
An epoch
Explanation:
I got it wrong and it epoch Red Riot out
Some breeds of beef cattle have two color coat color options, red and black, where black is dominant over red. If a black bull (male, Bb) is bred to a red cow (female, bb) what are the predicted coat colors of their offspring?
Answers
Answer: Aa = 50%
aa = 50%
Explanation:
Which nucleic acid can carry the protein synthesis instructions from the nucleus to the ribosomes?
DNA
RNA
Monosaccharides
Endoplasmic reticulum
Answers
Answer:
Monosaccharides
Explanation:
Monosaccharides
Which example describes an adaptation of a blueberry plant in the summer? Buds begin to form. The leaves turn red. The plant is dormant. Berries and leaves are fully grown.
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Answer:
Berries and leaves are fully grown.
Explanation:
Blueberry plants are native to the northern hemisphere and belong to the Vaccinium genera and Ericaceae family.
They are deciduous shrubs that that are grown in cold-weather regions. They exhibit winter dormancy, which they induce with exposure to hours of cold.
If the winter is not hard, the plants might flower during this season, but if not, they do it at the beginning of the spring.
Blueberry plants can adapt to variable climatic conditions. However, temperatures lower than 5ºC might damage the buds. And temperatures over 36ºC might also damage the fruits.
Sunny summers favor the fruit quality and avoid pathogen development.
The collecting season varies according to the plant variety, but usually, harvests are done from late spring to late summer.
During the autumn, leaves turn reddish before falling, and buds develop once the vegetative growth is over.
Which two phrases describe the motion of all the outer planets?
no rotation, slow revolution
fast rotation, slow revolution
north-to-south rotation, slow revolution
no rotation, opposite revolution
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Answer:
B. Fast rotation, slow revolution.
The two phrases that describe the motion of all the outer planets are fast rotation and slow revolution. Therefore,the correct option is B.
Outer planets, such as Jupiter, Saturn, Uranus, and Neptune, have relatively fast rotational speeds, meaning they spin on their axis more rapidly compared to the inner planets like Earth and Mars.
However, their revolution around the Sun is slower, as they are farther from the Sun and require more time to complete one orbit.
All outer planets have a slower revolution around the Sun compared to the inner planets. This is because their larger orbital paths result in longer orbital periods.
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Which is an example of mechanical digestion that occurs in the human digestive system?
A. Saliva in the mouth acts to moisten and break apart food molecules.
B. The muscular lining of the esophagus pushes food from the mouth to the stomach.
C. The muscular walls of the stomach act to churn food back and forth.
D. Small molecules, such as glucose, are absorbed into the blood from the small intestine.
Answers
Answer:
Saliva in the mouth acts to moisten and break apart food molecules
An example of mechanical digestion that occurs in the human digestive system is saliva in the mouth acts to moisten and break apart food molecules.
What is mechanical digestion?Mechanical digestion entails physically breaking down food substances into smaller particles so that chemical digestion can proceed more quickly.
Chemical digestion involves digestive enzymes further degrading the molecular structure of ingested compounds into a form that can be absorbed into the bloodstream.
Thus, the correct option is A. Saliva in the mouth acts to moisten and break apart food molecules.
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Floods begin as...
A) atmospheric processes
B) interior processes
C) surface processes
NO LINKS
Answers
Answer:
A flood begins as a A) Atmospheric Process
Hope it helps :)
Why do you think it is necessary for there to be variation in a population in order for evolution by natural selection to occur?
Answers
Variations in the population are necessary because it allows some individuals to acclimate to the environment while sustaining the survival of the population.
What do you mean by Genetic variations?Genetic variations may be defined as the existence of differences in sequences of genes between individual organisms of a species.
Natural selection randomly favors or unfavors one genotype at a time. If there will not be any genetic diversity, it may lead to either extinction or population explosion of a particular genotype.
The genetic variations also depend on the relative fitness of a particular species. In order to resist at least one genotype of given species, genetic variations are important.
Therefore, variations in the population are necessary because it allows some individuals to acclimate to the environment while sustaining the survival of the population.
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The chief port of Ecuador is:
Quito
Guayaquil
Otavala
Cuenca
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What role does the Krebs cycle play in the cells
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The two organ systems involved in this blood vessel constriction are the...pic attached. NO LINK ANSWERS PLS :)
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PLEASE HELP THIS IS DUE IN 30 MINUTES No links or I'll report
a muscle contracting and pulling the hand away is shown by _______________.
A) sensory neuron
B) motor neuron
C) interneuron
Answers
Answer:
So the answer would be B motor neuron
Explanation:
Because this is a movement it goes with the word motor so that is how I solved this.
Answer: B
Explanation:
The sensory neurons pick up impulses and passes it to the relay neurons which takes the information to the motor neurons which in turn causes the muscles to contract.
Interneurons are found in the central nervous system and carries impulses from one neuron to the other. So the answer is definitely B.
Sucrose is a carbohydrate produced naturally in plants. It is composed of glucose and fructose. Carbohydrates are made by plants which derive their food resources from photosynthesis. What molecules used in photosynthesis are rearranged to produce carbohydrates? Choose ALL that apply. A)ATP B)water (H2O) C)oxygen (O2) D)methane (CH4) E)carbon dioxide (CO2)
Answers
Answer:
b,e
Explanation:
i just took it
Carbon dioxide (CO2) and water (H20) are the molecules used in photosynthesis and rearranged to produce carbohydrates.
WHAT IS PHOTOSYNTHESIS:
Photosynthesis is the process by which green plants manufacture their food (glucose) using energy captured from sunlight. Photosynthesis involves series of biochemical reactions, however, the carbon dioxide and water are the two molecules combined. The general equation is represented as follows:6CO2 + 6H2O → C6H12O6 + 6O2
Therefore, carbon dioxide (CO2) and water (H20) are the molecules used in photosynthesis and rearranged to produce carbohydrates.
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