Answer:
El componente gaseoso que faltaba en la atmósfera primitiva y que hoy es esencial para la vida es:
El oxigeno [tex]O_{2}[/tex]Explanation:
Se tiene constancia de que en sus inicios, la atmósfera de la Tierra estaba compuesta por los gases resultantes de las diferentes erupciones volcánicas (ya que la actividad volcánica de dicha era fue demasiado alta), por lo tanto, era normal tener una atmósfera compuesta por azufre, dióxido de carbono, nitrógeno (que hoy en día es más del 70% del aire que respiramos) e incluso agua en estado gaseoso, sin embargo, la presencia del oxígeno [tex]O_{2}[/tex] era sumamente baja, casi inexistente, actualmente su presencia en el aire es de un poco más del 20% y es sumamente importante para diferentes funciones en los seres vivos, incluso los seres vivos acuáticos que se abastecen del oxígeno disuelto en el agua, esta es la razón por la cual, si tienes una pecera con peces en tu casa, debes instalarle un sistema que abastezca de oxígeno constantemente a tu peces mascota.
Charles Keeling's work at the National Oceanic and Atmospheric Administration (NOAA) Mauna Loa Observatory
paved the way to understanding how human activities can lead to global warming.
Which greenhouse gas did Charles Keeling measure at the observatory?
A)
carbon monoxide
B)
methane
C)
nitrous oxide
D)
carbon dioxide
Answer:
D) carbon dioxide
Explanation:
Carbon dioxide (CO2) is the most important greenhouse gas which is known to absorb heat that would otherwise be lost to space. It has been shown that CO2 causes approximately 80% of global warming. Different human activities, but especially the burning of fossil fuels, are the main cause of global warming. It has been estimated that 40 billion metric tons of CO2 produced by human activities are being discharged into the atmosphere annually. Other human activities associated with global warming by increasing the concentration of CO2 in the atmosphere include deforestation and cement production.
Asian carp are fish that were imported into the United States to be raised in captivity as a food source. The carp can grow to 100 pounds and feed on many types of small fish. Over time, the carp escaped into the wild and now exist in several river systems. It has no natural predators and outcompetes native species for resources. What will most likely occur as a result?
a.The genetic diversity and the biodiversity of the ecosystem will increase.
b.The genetic diversity and the biodiversity of the ecosystem will decrease.
c.The genetic diversity will increase and the biodiversity of the ecosystem will decrease
d.The genetic diversity will decrease and the biodiversity of the ecosystem will increase
Answer:
Try B
Explanation:
If the fish are the only thing that can survive, There will eventually be no diversity
Answer:
b
Explanation:
guess
since they have no predators
they would increase in population
then
they would take up of resources of others
Explain how manganese and iron ores commonly form.
Answer:
The iron ore deposits began forming when the first organisms capable of photosynthesis began releasing oxygen into the waters. This oxygen immediately combined with the abundant dissolved iron to produce hematite or magnetite. ... Steel Mill: Most iron ore is used to make steel.
The metal is obtained by reducing the oxide with sodium, magnesium or aluminium, or by the electrolysis of manganese sulfate. Manganese nodules have been found on the floor of the oceans. These nodules contain about 24% manganese, along with smaller amounts of many other elements.
what biome receives a lot of rain, moderate temperatures, and a long growing season
A. coniferous forest
B. taiga
C. deciduous forest
D. grassland
Biome that receives a lot of rain, moderate temperatures, and a long growing season is grassland. Thus, option D is correct.
What is ecosystem?Ecosytem is defined as a community that is biological by nature and the organism in that community attract with each other as well as their physical environment. Ecosystem is consist of both biotic as well as abiotic factor. The living components of ecosystem comes in category of biotic factor and non living components of ecosystem comes in category of abiotic factor.
Biodiversity is all the different kinds of life living in a particular area like the varity of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity.
Biodiversity is very important for the process that's support all life present on earth including human.
Therefore,Biome that receives a lot of rain, moderate temperatures, and a long growing season is grassland. Thus, option D is correct.
Learn more about ecosystem here:
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Just as in humans, systems interact in plants to maintain homeostasis and accomplish the functions of transport, reproduction, and
response. What are some examples of plant processes that involve an interaction between stems, roots, and leaves?
A)
Water is transported up the stem from roots to leaves via the xylem.
B)
Photosynthesis in the leaves requires water to be absorbed by the root
system.
Root growth requires the transport of glucose from the leaves through the
xylem.
D)
Oxygen produced in photosynthesis is transported to the roots where is
can be released into the soil.
E)
Glucose produced in the leaves through photosynthesis is transported
throughout the plant via the phloem.
Answer:
A) Water is transported up the stem from roots to leaves via the xylem.
B) Photosynthesis in the leaves requires water to be absorbed by the root
system.
E) Glucose produced in the leaves through photosynthesis is transported
throughout the plant via the phloem.
Explanation:
Trust me
Have a good day :)
The examples of plant processes that involve an interaction between stems, roots, and leaves is water is transported up the stem from roots to leaves via the xylem. Hence option A, B an E is correct.
What is homeostasis?Homeostasis is defined as any self-regulating mechanism by which biological systems have a tendency to keep their stability while responding to environmental factors that are best for survival. The preservation of essentially constant internal conditions is referred to as homeostasis.
The xylem carries water up the stem from the roots to the leaves. Water must be absorbed by the root system in order for photosynthesis to occur in the leaves. The phloem circulates glucose produced by photosynthesis in the leaves throughout the plant.
Thus, the examples of plant processes that involve an interaction between stems, roots, and leaves is water is transported up the stem from roots to leaves via the xylem. Hence option A, B an E is correct.
To learn more about homeostasis, refer to the link below:
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True or false? Living things exist alone and have no interaction with other living things or their
environment.
Answer:
False, Living things exist with other living things and frequently interact with other living things.
Which of the following activities is likely to have the highest impact on biodiversity? A. Copper mining in Chile. B. Large-scale deforestation of the Amazon and Congo basin tropical forests. c. Soil erosion on the slopes of the Rocky Mountains. D. Increased use of ethanol fuels in the United States.
Answer:
B
Explanation:
Which of Newton’s laws explains why the balls did not remain in the container at the end of the ramp?
Newton’s Law of inertia
Newton’s Law of force, mass, acceleration
Newton’s law of Action/ Reaction
Newton’s law of gravity
Answer:Newton's first law
Explanation:
Friction and gravitational pull are common unbalanced forces that change the motion of objects on the Earth. Friction acts on objects to slow them down, such as a ball rolling across something like a carpet or sand.
Clouds form when water vapor _________.
A. evaporates
B. condenses
Answer:
B. condenses
Explanation:
Clouds form when water vapor condenses.
Pls help with this question (I will mark brainliest)
Answer:
C. Physical, protein
Explanation:
I so sorry if I'm wrong
1 . What happens in the population if the mutation phenotype is helpful
2. Why does that happen for that population that has a helpful phenotype?
3. How does this mutation continue to exist in a population?
Answer:
1. The population will increase as they're better adapted to their environment and have a higher survival rate due to this helpful phenotype.
2. This happens to the population because this helpful phenotype might lead to less exposure to predation in which leads to a better survival fitness for the organism.
3. This mutation continues to exist as the organisms continue to successfully reproduce into the population due to being able to survive for longer.
Explain why natural selection happens to the individual but adaptation happens to an entire population.
Answer:
Natural selection kills a single individual that was weaker/less suited for the environment than the others. Adaption happens to one individual but through breeding, it becomes a trait for the entire species.
Explanation:
Take a moment to examine these images of cells and their surrounding membranes. You already know that the cell membrane protects the cell from the external environment and controls what substances enter and exit the cell. As you study the pictures, consider the following questions: Which of the two cells do you think is more efficient at transporting materials through the cell? Why?
Answer:
Where is the pic.........
Systematists use several fundamental criteria to assign animals to phyla. Check all of the criteria that systematists would use to classify animals under specific phyla. Check All That Apply Feeding behaviorFeeding behavior Adult body symmetryAdult body symmetry Ultimate adult body sizeUltimate adult body size The embryological formation of body cavitiesThe embryological formation of body cavities Biogeographic distributionBiogeographic distribution Gene sequencesGene sequences The number of tissue layersThe number of tissue layers
Answer:
The correct answer is -
Adult body symmetry
The embryological formation of body cavities
Gene sequences
The number of tissue layers
Explanation:
Scientists and taxonomists use different criteria to assign different animals to particular phyla. The various systematic criteria that are used more frequently by systematists are as follows:
1. Adult body symmetry
Body symmetry is one of the criteria used to assign an organism or animal to a particular phylum. There is two symmetry found in animals radial and bilateral. If any plane passes through the middle axis and divides into two identical segments called radial symmetry and Bilateral symmetry is where only a single plane divides the body into halves. However, there are many animals that do not have any symmetry and called assymetrical.
2. The embryological formation of body cavities
Other than layers body cavities also helps in assigning the animals that depend on coelom - body cavity between the body wall and gut wall
Animals could be - coelomate(coelom present), pseudocoelomate -(not lined with mesoderm) and acoelomate(coelom absent).
Gene sequences
Genetic similarities also consider and how close an organism to their organism of the phylum or species.
The number of tissue layers
Different body parts, tissues, muscles, and organs developed from the different cell layers that are formed during embryo, therefore, called embryonic layers.
Animals on the basis of these embryonic layers could be diploblastic or triploblastic. Diploblastic animals form 2 embryonic layers the outer and inner layers called the ectoderm and the endoderm respectively. Triploblastic animals have an extra middle layer known mesoderm.
Which of the following would not very in a diet between someone from the Ecuador and someone from China
A. Major nutrients
B. Kinds of carbohydrates
C. Amount of food consumed
D. All of these would vary
https://youtu.be/wmQMBJ_ce3k see this video
What is NOT a principle of genetics?
Answer:
What are the options?
Explanation:
Which of the following is a chemical defense of plants?
A.) Macrophages
B.) Helper T cells
C.) Thorns
D.) Toxins that kill the predator.
an infectious disease is one that is caused by
pollutants in the environment.
heredity.
pathogens.
hemophilia.
Answer:
pathogens
Explanation:
pathogens may occur in various way e.g spread from a person to person by directly body contact
Which microscope creates an image of the surface of a sample?
A. SEM B. TEM C. simple D. compound
Answer:
SEM
Explanation:
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample.
True or False:
REGULAR VARIATION IN MAGNITUDE OR POSITION IS CALLED TRANSLATION.
Subject= Science
Answer:
False
Explanation:
(0 o 0) <( | i demand brainliest.)
/|___|\
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How will the Benedict solution tell you there is sugar present?
Answer:
Benedict's solution can be used to test for the presence of glucose in urine. ... When reducing sugars are mixed with Benedicts reagent and heated, a reduction reaction causes the Benedicts reagent to change color. The color varies from green to dark red (brick) or rusty-brown, depending on the amount of and type of sugar.
Explanation:
Please help me.
Somebody help me
Answer:
C
Explanation:
Option C is the answer as Distance reduces with the passage of time.
Please mark as brainliest.
Deletion of a DNA base from a gene affects an organism by
Answer: changing the amino acids that come after it and becoming an entirely different protein.
Echinoderms are a group of aquatic invertebrates, but they are only found in
water.
The
of an echinoderm is made of hardened plates, which make the animal feel bumpy.
The body of an echinoderm is arranged like the spokes on a wheel. This is called
symmetry.
Answer:
1.salt 2.endoskeleton 3.radial Explanation: just did it
Answer: person above is right :)))
Explanation:
What is neurotechnology?
Neurotechnology is any technology that has a fundamental influence on how people understand the brain and various aspects of consciousness, thought, and higher order activities in the brain.
Structure of Plant and Animal cell
Answer:
Explanation:
hope it is helpful to you
This is a test...Whoever gets it right, will receive 5 stars, and a Thanks. You have 2 minutes.
What is the bite force of a lion, compared to a chihuahua. Your time started when you started reading this.
Answer:
Chihuahua bite force in pounds is 3,900 (psi) pounds per square inch. The bite force of a lion is around 600 PSI. To say that a Chihuahua can bite at more than 6 times the strength of a lion is absolutely ridiculous. At first I thought the opposite.
Answer:
A Chihuahua can bite 6 times PSI a lion can. A lion can bite roughly 650 PSI, the small dog's bite is around 3900.
Explanation:
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Answer:
New moon to full moon: waxing crescent, first quarter, waxing gibbous,
Full moon to New moon: Waning gibbous, Third quarter, Waning crescent,
Explanation:
Answer:
Going from a New Moon to a Full Moon: Waxing Crescent, First Quarter, Waxing Gibbous
Going from a Full Moon to a New Moon: Waning Gibbous, Third Quarter, Waning Crescent
Explanation:
Please help me. The question is “ Which Tube will experience the greatest loss of water? Claim: Tube #___ will have the greatest amount of water loss. the options are Tube 1, Tube 2 & Tube 3.
The second section of the question is. Reasoning and evidence: Tube ___ will have the greatest amount of water loss because ___________ (give evidence from date above and explain it). (Hint:Osmosis).
I will give brainliest to whoever helps me answer this question.
Answer:
It is Tube 3
Explanation:
This is because the beaker has a lower water potential then the others. Since the dialysis tube holds 100% water and the beaker holds 40% of water, water will move out of the bag to the beaker. Because of the low water potential on the beaker
Give some examples of biodiversity you find in your ecosystem.
Most people recognize biodiversity by species—a group of individual living organisms that can interbreed. Examples of species include blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria that can't even be seen by the naked eye.