Answer:
c
Explanation:
During Precambrian time, The amount of oxygen increased in the earth's atmosphere. Therefore, option C is correct.
What is the Precambrian time period?From roughly 4.6 billion years ago, when Earth first started to form, to the start of the Cambrian Period, 541 million years ago, is the Precambrian Period. It is the earliest era which is followed by the Cambrian period.
Large objects bombarded the Precambrian Earth, the crust was split into the first continents and ocean basins, crustal plates were mobilized, the atmosphere changed from reducing to oxidizing, and early life began and evolved. Climate and geologic events are responsible for the end of this period.
During this period, the amount of oxygen increased rapidly. Therefore, option C is correct.
Learn more about the Precambrian period, here:
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Question 1 (1 point)
Which of the following is a abiotic factor that could limit the growth of the plant population?
Grasshopper population
Sunlight
Fish population
Bacteria in the water
Answer:
Sunlight
Explanation:
Plants are autotrophs which makes their own food in the presence of sunlight and the process is called photosynthesis. Sunlight is very important for the process of photosynthesis.
So, the only abiotic factor from the options that could limit the growth of the plant population is sunlight. plants can not make their food without sunlight and no food means no growth of plant population.
Hence, the correct answer is "Sunlight".
Introduced in 1963, __________ limits the quantity of air pollution within a given area.
A)
pollution prevention
B)
an environmental management system
C)
zoning
D)
the Clean Air Act
E)
fire ecology
Cell differation is regulated by which two factors
Transcription and growth
Growth and limiting
Limiting and transcription
Answer:
Growth and limiting
Explanation:
plz help me with this problem need help filling this in.
UNA CADENA ALIMENTARIA ES LA RELACON ENTRE LOS MIEMBROS DE UN ECOSISTEMA PARA QUE UNA PARTE DE LA ---------------SEA TRANSFERIDA ENTRE ELLOS
Answer:
UNA CADENA ALIMENTARIA ES LA RELACON ENTRE LOS MIEMBROS DE UN ECOSISTEMA PARA QUE UNA PARTE DE LA -ENERGIA- SEA TRANSFERIDA ENTRE ELLOS
ExplanatioN:
La cadena trófica es un procesos de tranferencia de energía entre distintos organismos de un ecosistema, en el cual cada organismo en un nivel se alimenta de organismos provenientes del nivel anterior y es comido por organismos del nivel siguiente. Los primeros eslabones de la cadena son autótrofos (fotoautotrofos o quimioautotrofos), productores que sintetizan la materia orgánica a partir de productos inorgánicos. Los eslabones siguientes son los consumidores heterótrofos: herbívoros, carnívoros, detritívoros.
Paso de energía entre niveles:
Del total de energía que llega a la superficie terrestre, solo el 1% es tomado por los fotoautótrofos. Esta energía adquirida que ingresa a la cadena trófica, tiene un recorrido unidereccional por donde pasa de nivel a nivel, desde los autótrofos hasta los heterótrofos, hasta que finalmente esa energia es disipada nuevamente en el ambiente.
Regla del 10%:
Esta regla establece que solo el 10% de energía utilizada por un nivel trófico pasa al siguiente nivel trófico. Solo el 10% de energía almacenada como biomasa en uno de los niveles tróficos, por unidad de tiempo, se convierte en energia almacenada del siguiente nivel trófico.
Esta progresiva reduccion de energía determina en número de niveles tróficos en esa cadena, que puede ser de cuatro o cinco eslabones.
Natalie accelerates her skateboard along a straight path from 0 m/s to +4.0 m/s in 2.5 s. Find her average
acceleration.
Answer:
[tex]a=1.6\ m/s^2[/tex]
Explanation:
Given that,
Initial speed, u = 0 m/s
Final speed, v = 4 m/s
Time, t = 2.5 s
We need to find the average acceleration of Natalie. We know that average acceleration is equal to the change in speed per unit time. So,
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{4-0}{2.5}\\\\a=1.6\ m/s^2[/tex]
So, her average acceleration is [tex]1.6\ m/s^2[/tex].
I'll give brainliest
Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?
Brody is correct because the wave involves an input of energy.
Ethel is correct because energy is not carried from one place to another.
Brody is correct because the pattern repeats.
Ethel is correct because the motion has no pattern.
Answer:
I think its the first one
Explanation:
If not then its the 3rd one
Answer:
its B
i know this for a fact
QUICK PLEASE HELP!! *** EARTH SCIENCE ****
Answer:
wot
Explanation:
How does energy move from place to place ?
Answer:
Energy can be moved from place to place by moving objects, or through sound, light, or electrical currents. Energy can be converted from one form to another form. Kinetic energy can be distinguished from the various forms of potential energy. This is how energy moves. I hope it helps!!
Explanation:
what is the name of the biggest fish in history?
What is the main function of meiosis?
A.
to produce gametes for sexual reproduction
B.
to produce more body cells within an organism
C.
to produce a clone of an organism in asexual reproduction
D.
to produce more embryonic cells following fertilization
Answer:
B
Explanation:
What does this article reveal about the role Black inventors have played in America's history? Explain your answer.
Answer:
The article revealed the fact that Black inventors have always played an active role in inventing new things in America. In the 18th and 19th centuries they were denied the right to patent their inventions because of their status as slaves. This has changed for the better in present times as many Black inventors are being granted patent rights.
Explanation:
The article, "America’s always had black inventors – even when the patent system explicitly excluded them", by Shontavia Johnson, explained the active role that Black Americans, both free and slaves played in inventing things in the United Slaves. The article explained that although the patent rights signed into the constitution in 1787 was written in a neutral tone, it did not change the fact that black inventors were actually denied patent rights.
This segregation affected people like Henry Boyd, Ned, Benjamin Montgomery among others. In recent times, this segregation has significantly been curbed as many Black inventors are now owners of patents. An example is Lonnie Johnson, inventor of the Water Gun and owner of more than 80 patents.
Answer: The article revealed the fact that Black inventors have always played an active role in inventing new things in America. In the 18th and 19th centuries they were denied the right to patent their inventions because of their status as slaves. This has changed for the better in present times as many Black inventors are being granted patent rights.
Explanation: To be Honest
Which pair of statements correctly describes a way that the chromatin contributes to gene expression?
Answer:
Chromatin is responsible for gene expression.
Explanation:
Chromatin is responsible for gene expression because chromatin contains DNA that has all information about genes. chromatin controls the gene in order to form encoded products. DNA in chromatin send information to the RNA to produce specific types of proteins that are needed by the organisms for its growth and development so in that way the genes can be expressed in the organism.
How do erupting volcanoes change landforms? Answers:
A. Erupting volcanoes become flat and form plateaus.
B. Hot lava erodes rocks and makes mountains smaller.
C. Cooled lava forms layers of rock that can become Islands.
D. Cooled lava forms soil that supports animal and plant life on plains.
I would say b Answer:
Explanation:
Because of the heat the mountains will slightly melt which changes their size and shape
how to Draw skeletal system of human body
please give me some concept to Draw it
Explanation:
Here there is a image of skeleton system u can draw it
Which type of large-scale environmental impacts are the most detrimental? Is all human impact on the environment negative? How can we prevent the occurrence of large-scale, negative environmental impacts?”
Answer:d all of the above
Explanation:
What is a convergent boundary? How do plates interact with eachother? (due in 10 minutes please help)
If a 15 amp circuit has a 9V battery in it, how much power is being generated?
Answer:
P = 135 Watts
Explanation:
Given that,
Current in the circuit, I = 15 A
Voltage, V = 9V
We need to find the amount of power generated. The formula to find the electric power is given by :
P = VI
Substituting all the values,
[tex]P=9\times 15\\\\=135\ W[/tex]
So, the required power is 135 watts.
What are three ways you can reduce the risk of contracting a bacterial disease?
I will give you Brainly just answer please!!
Answer:
Warding off germs and infection
Warding off germs and infectionYou can prevent infections through simple tactics, such as washing your hands regularly, avoiding close contact with people who are sick, cleaning surfaces that are touched often, avoiding contaminated food and water, getting vaccinations, and taking appropriate medications.Warding off germs and infectionYou can prevent infections through simple tactics, such as washing your hands regularly, avoiding close contact with people who are sick, cleaning surfaces that are touched often, avoiding contaminated food and water, getting vaccinations, and taking appropriate medications.
A gene pool consists of all the genes within a _____.
Answer:
interbreeding population
Explanation:
please give brainlest need 1
what is the advantage and disadvantage of the Ocotillo and Hummingbird relationship
Advantages:
The plant is an integral member of the regional desert ecosystem and native pollinators such as hummingbirds and carpenter bees consume ocotillo nectar for nutrients. The hummingbird and the ocotillo have an important plant-pollinator relationship, as the hummingbird relies upon the flowers for a nectar source.
The relationship between Ocotillo and Hummingbird is an example of a mutualistic relationship, which means that both species benefit from each other's presence.
What are the various advantages and disadvantages of the relationship ?The advantages and disadvantages of this relationship can be described as follows:
Advantages:
Ocotillo provides a source of nectar for hummingbirds, which is an important source of energy for their high metabolic rate.
Hummingbirds are efficient pollinators of Ocotillo flowers, which helps to ensure their reproduction and genetic diversity.
Ocotillo provides a nesting site for hummingbirds, where they can raise their young in safety from predators.
Disadvantages:
The relationship between Ocotillo and hummingbirds is specific and may not be beneficial to other species of plants or animals.
Ocotillo is adapted to living in arid environments and may not provide a suitable habitat for some other species of birds or animals.
If the population of either Ocotillo or hummingbirds were to decline significantly, it could affect the survival of the other species in the mutualistic relationship.
Overall, the advantages of the Ocotillo-Hummingbird relationship outweigh the disadvantages, and this mutualistic relationship is an important part of the ecosystem in which they both live.
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Which statement is the most accurate regarding the first stage of photosynthesis?
Answer:
1. A 2.B 3.B 4. C 5.5.
Explanation:
Hii..
Plzz answer..
Note the relationship between the first two words and suggest the suitable word(s) for the fourth place.
Ques. - Axons : Nerve :: Cytons : .......
what industry is widely known for the uses synthetic organic compounds?
Answer:
Synthetic Organic Compounds are widely used for pest control. They are in a lot of pesticides and insecticides.
When scientists compare molecular clocks between species, they
have to use the same segment of DNA. Which of these statements
would explain why that is necessary?
A. Not every segment of DNA mutates.
B. Different genes mutate at different rates.
C. Species accumulate neutral mutations at random rates.
D. All mutations cause harmful effects.
Check Answer
Answer:
ITS B: DIIFERENT GENES
Explanation:
Answer:
Yeah same here
Explanation:
The reason is mutation rates differ between species and even between different regions of the genome of a single species. These different rates of nucleotide substitution are measured in substitutions (fixed mutations) per base pair per generation.
What affects do an insertion mutation have on a DNA strand?
i’ll give a brainliest to the person with the correct answer
The increase in potency of a substance that results from travel through the food chain is called __________.
A)
heredity
B)
dose response
C)
gene-environment interaction
D)
biomagnification
E)
physiology
Answer: (is D Biomagnification)
Explanation: coz it just is
How does an atom become a positive ion?
A- It loses an electron,
B- It gains an electron,
C- It gains a neutron,
D- It loses a neutron
Answer:
A- It loses an electron,
Explanation:
When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion.
Hope this helps :)
~Blazetoxic123~
A
boundary is a place where two tectonic plates move away from each other.
transform
continental
O divergent
convergent
Answer: Divergent boundary
Explanation: Good luck! :D