The function of tunnels and passageways in subsurface mining to drain underground lakes where minerals are found. option C is correct.
What is subsurface mining?Subsurface mining is the process in which mineral ores are too deep to extract at with this mining techniques, subsurface mining methods are used .
An advantage and good thing of subsurface mining is that it will not disturb land than surface mining it only disturbs less than one-tenth the surface amount of land as surface mining and the method.
Therefore, the function of tunnels and passageways in subsurface mining to drain underground lakes where minerals are found. option C is correct.
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20 Points and Brainliest if you answer in 5 mins
Huan made a chart to study for an exam about radio waves.
under column X
Changes the frequency of a wave
is used by cell phones to transmit data
Under Column Y
changes the height of a wave
is used by television stations for pictures
Which headings best complete the chart?
A) X: Phase, Y: Pulse
B) X: Pulse, Y: Phase
C) X: AM, Y: FM
D) X: FM, Y: AM
In the electromagnetic spectrum, the headings which best describe the chart are X: FM, Y: AM.
What is electromagnetic spectrum?The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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I need help please j
Find the average kinetic energy of the molecules shown in the sample above. ( C and D are wrong )
a. 5
b. 4
c. 3
d. 36
Answer: B
Explanation:
What is the function of tunnels and passageways in subsurface mining?
a. to reach mineral ore deep below the surface of the earth
b. to reach mineral ores on the surface of the earth
c. to drain underground lakes where minerals are found
d. to create strip mines and quarries below the surface of the earth
Answer: to reach mineral ores on the surface of earth
Explanation:
A science teacher is planning a science lab in which students will identify conditions that do and do not speed up the time required for sugar to dissolve in water. Which of the following conditions will NOT have an effect on the dissolving time?
PLEASE GIVE ME THE RIGHT ANSWER FAST!!!
B. Grinding the sugar
D. Magnetizing the sugar
E. Heating the water
F. stirring the water
Answer is in a photo. I couldn't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
bit.[tex]^{}[/tex]ly/3a8Nt8n
Answer:
Your answer is B. Grinding the sugar
Hope this helps! :)
Describe what bacteria are - their parts, how they can be good, how they can be bad, and the different types.
I hope that was enough to answer your question!!!
Have a good day and I hope you pass all of your exams!!!!! <3Create a time that marks important events during the Precambrian Supereon.
Please help. (science question)
Answer:water erodes the earth by passing over rock and thinngs many times, as in a river, the water slowly washes away the rock turning it into sediment or silt.
Explanation:
Answer:Hope this helps :) if so pleas could you mark brainliest:) enjoy!
Explanation:
The cycle of water erosion has been here since forever thanks to the rain rivers, ponds lakes, the sea and the ocean because it first starts off with the rain then the rain fills up the lakes and pond and start rivers and the rivers lead to the sea and ocean and from there the water evaperates then it rains again and the lakes and ponds help with the evaporation.
Jennifer observes a weather map showing tomorrow's weather. She predicts that air will travel from the low pressure system to the high pressure system, causing wind. The wind will carry moisture since it is coming from the ocean. Choose the statement which corrects the error(s) in Jennifer's prediction.
a weather map of Florida with an L to the left of Florida over the ocean and an H over the land
a The wind from the ocean will not carry moisture.
b The wind will travel from the high pressure system to the low pressure system.
c Since the low pressure system is not over land, wind will not be created.
d Wind is only created when two high pressure systems meet.
Answer:
b The wind will travel from the high pressure system to the low pressure system.
Explanation:
I think this is the answer not sure.
Answer:
B
Explanation:
I did the same Exam as you and got the answer right when I chose B
Hope this helps you!
P.s have an amazing day! <3
The local newspaper has published the passage below.
Last week, scientists released incredible images of aurora australis, known as the northern lights, as seen from the Hubble telescope. The Hubble telescope was placed in orbit in 1990 by the space shuttle and has since delivered the sharpest images we have of our planet, our galaxy, and the universe. The images delivered last week show the beautiful display of lights in the southern hemisphere. These lights are the result of the solar activity known as solar wind. Traces of solar wind reach well beyond Earth and have been detected as far as Saturn.
Which statement in the news passage above is inaccurate?
The aurora australis cannot be seen from space.
The Hubble telescope does not orbit our planet.
The aurora australis is known as the northern lights.
Solar winds do not reach well beyond our planet.
Answer:
Solar winds do not reach well beyond our planet
Explanation:
I hope this helps :)
Solar winds do not reach well beyond our planet.because Traces of solar wind reach well beyond Earth and have been detected as far as Saturn. says that
Please help me with this NO LINKS
Answer:
d
Explanation:
the moon because moon is following the earth
A student uses a lever and fulcrum to lift a rock off the ground.
Which option describes when potential energy is converted into kinetic energy during this process?
a. when the lever is wedged beneath the rock but before it has been lifted
b. when the student presses down on one side of the lever to cause it to move
c. when the rock rests on the ground without the lever
d. when the rock rests above the ground
Answer:B
Explanation: I know this because kinetic energy is when something is moving and potential energy is when something is not moving and the energy is being stored so it has you are pushing on the other side moving the object it is transforming the potential energy also known as stored energy into movement also known as kinetic energy
QUestion 6 and 7
6. What are the three main roles of an ecosystem?
7. What is the purpose of a decomposer in an ecosystem?
#6: The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem.
#7: Nature has its own recycling system: a group of organisms called decomposers. Decomposers feed on dead things: dead plant materials such as leaf litter and wood, animal carcasses, and feces. They perform a valuable service as Earth's cleanup crew
HOPE THIS HELPS
PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....
all I need you to do its to type out these pictures word for word it pretty simple
Answer:
Disease can reduce the size of a population quickly.
The amount of resources, such as food and water, limit how many pikas can survive.
The presence of predators limits how large the population can grow.
As the population grows, the pikas compete with each other for resources.
The amount and types of space avalible in an environment mean only a certain number of pikas can make homes.
On a summer's day, beach sand will feel, and be, much hotter than the adjacent water due to the sand's lower thermal conductivity.
true or false?
T-T
Answer:
true. good luck, you need it!
Explanation:
Which best explains how a single-celled organism can survive without other cells?
Answer:
They are able to perform all necessary functions within one cell.
Explanation:
I will mark brainlist for best awnser
Imagine that all the plants in a particular area died. Which best predicts what would happen to the animals in that area? Choose the prediction that best matches your thinking. (write a paragraph explaining why you chose that answer.)
A. The animals that eat plants would all die. The animals that eat only animals would live.
B. Some of the plant-eating animals would die. Other would live by switching to eat other animals.
C. All of the animals would eventually run out of food and die.
D. All of the animals would survive by eating other foods.
Explain why you selected the prediction.
Explain the difference between mechanical weathering and chemical weathering
Answer:
mechanical weathering breaks rocks into smaller forms without any change in their composition whereas chemical weathering breaks down rocks by forming new minerals .
or simply mechanical weathering is the physical breakdown of rocks while chemical weathering is the breakdown of rocks through chemical reactions .
image------------------------------------------------------------------------------------------------------------------v
v--------------------------------------------------------------------------------------------------------------------------v
--------------im just trying to fill space for the minimum 20 char
The answer is probably tt
Well for parent 1 and parent 2 ( 1st parent of 2 ), parent 1 shows T so it forms Tt
Parent 1 and 2 ( 2nd parent of 2 ) ( parent 1 also has T and parent 2 has t ) so it forms Tt
Parent 1 ( 2nd parent of 1 ) and parent 2 has t and parent 1 is normal which forms tt
So that leaves 2nd parent 1 and parent 2
In the presence of light, plants use carbon dioxide and water to produce sugar and oxygen during the process of transpiration.
True or False?
Write a paragraph on why food needs to be digested. :)
Please hurry I need it.
Answer: You die if no digest
Explanation:
Food needs to be digested because your body can't contain large stuff whole, so it has to be converted into a smaller amount. For Instance, if you were to eat a entire turkey then your body would just explode I guess if you wouldn't digest it. Also, without digesting food you can't enter new food into your body. Therefore, this is why food needs to be digested.
Answer the following questions with a picture only PLEASEEEEE.
1. What is the main source of energy for ecosystems?
2. What are some natural things that can disturb ecosystems?
Answer:
1.Photosynthesis is the process of converting light into energy
2.Natural events, such as wind, drought, flood, fire, or disease.
Explanation:
1.Since photosynthesis converts light into C-H bonds in organic material, photosynthesis is the most common source of energy in most habitats, and therefore carbon flow and destiny are inextricably related to energy flow.
2.Natural disasters such as wind, drought, storm, burning, or disease may cause disruption. These "natural occurrences" are often linked to human activities. Air and water emissions, as well as climate change effects such as temperature, rainfall, and ocean chemistry, are also examples of human disruptions.
(hope this helps can i plz have brainlist :D hehe)
someone help no links ty
Answer:
The force of gravity on an object is called weight
Explanation:
Please help!!!!!!!!! Which word goes here and means composed of one element??!!
Answer:
Pure-Substance
Explanation:
Answer:
Pure-Substance
Explanation:
I'm just answering so you can give the other person Brainlyest.
PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....
all I need you to do its to type out these pictures word for word it pretty simple
Question: Describe how a river changes the earth´s surface. please explain in your own words, might be reported if answer is c o p y r i g h t
Answer:
Answer down below
Explanation:
Through the processes of erosion and deposition, rivers and streams can drastically alter the Earth's surface. ... The rushing water of rivers helps to carve new features into the surface of the Earth.
Match the following items.
1.
uses a lens to gather and focus light
refracting telescope
2. separates starlight into wavelengths
radio telescopes
3. pick up faint-lighted stars
spectrograph
4. see binary stars
giant refractors
5. see behind nebulae dust
giant reflectors
Answer:
1-uses a lens to gather and focus light- giant reflectors
2-separates starlight into wavelengths- spectrograph
3-pick up faint-lighted stars- radio telescope
4-see binary stars- refracting telescope
5-see behind nebulae dust- giant refractors
Explanation:
is it correct?
How can wind and water change the materials on earth's surface? (Specifically, rocks/the geophere)
pls help due tonight
or my dad will get mad at me
Answer:h
Explanation:
15 points?
Extinction of a species is most likely to NOT occur in which example?
A. the organism is larger and stronger than others in it's environment
B. the organism is smaller and smarter than others in its environment
C. the organism is larger and smarter than others in it's environment
D. the organism is able to survive and reproduce more than others in it's environment
Answer:
D. the organism is able to survive and reproduce more than others in it's environment
Explanation:
It will only go extinct if it can't survive or reproduce.
