what are the answer choices
what are benefits of coal as a source of energy ?
Answer:
The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel. ... Steam coal - also known as thermal coal - is mainly used in power generation. Coking coal - also known as metallurgical coal - is mainly used in steel production.
True or false:
This is for science and I only have one more question but it's getting me stuck: if you get this right I'll vote you brainiest!:)
If a gene sequence changes, the proteins associated with that gene could likewise
be affected. True/False
Answer:
True
Explanation:
You are looking through a light microscope with a 10x eyepiece trying to determine what type of cells you are seeing. You can only see individual cells with 100x total magnification. What type of cell is it and how much detail would you expect to see?
A=Prokaryotic cell, very little detail
B=Prokaryotic cell, much detail
C=Eukaryotic cell, very little detail
D=Eukaryotic cell, much detail
Answer:
Either A or B
Explanation:
Prokaryotic cells are unicellular.
At 100x total magnification, we would see eukaryotic cells with very little detail. So the correct option is C.
What is magnification?The ratio of the size of the image of an object to the actual size of an object in a plane perpendicular to the optical axis is referred to as magnification.
If the value of the linear magnification is negative, the image formed will be invested. If the value of the linear magnification is positive, the image will be erect.
The magnification of a microscope is calculated as the magnifying power of the objective lens and the eyepiece lens. This is called the total magnification of the microscope.
Now, the total magnification is 100x, and the magnification of the eyepiece lens of 10x.
Let the magnification of the objective lens be y.
10x × y = 100x
y = 100x / 10x
y = 10x
So, an objective lens at 10x is used to observe the eukaryotic cell with very little detail.
Therefore, the correct option is C.
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if you could help me that would be awesome :)
Answer:
12) Solution
13) 0 to 6
14) H+(hydrogen) than OH-(Hydroxide)
15) 8-14
16) OH-(hydroxide) than H+(hydrogen)
Explanation:
12. Which area of deep ocean research provides the most economic
benefit?
a sea-floor spreading
b. oil resource
C.new habitats
d hydropower
Answer: Oil resources
Explanation:hope this helps and happy early hallowen :D
1. Angiosperms ensure the transfer of gametes through structures called _____________________.
Which of the following is an example of an organism growing developing?
Answer:
A frog and humans
Explanation:
A frog develops and changes during its lifecycle,also a human thy grow as they age.
What is the term for the separation of genetic material of a cell into two daughter cells?
interphase
mitosis
cell cycle
cell division
Answer:
B; Mitosis.
Explanation:
Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.
Answer: B. Mitiosis
Explanation: I got it in the k12 quiz final
Given the formula D=M/V, a substance with a Density of 50 gm/cc, with a Volume of 10 cc, has a Mass of ___________
A
500 cc
B
250 cc
C
500 gm
D
500 cc
Answer:
A
500 cc
Explanation:
D= M/V
50 =M/10
M =50×10
=500 cc.
Hope it helped.
In which layer of Earth can a garden and rocks he found?
A. Exosphere
B. Hydrosphere
C. Lithosphere
D. Stratosphere
All lipids (Fats) contain the following elements except:
A, Nitrogen
B, Oxygen
C, Carbon
D, Hydrogen
Analyze reasons for water’s polarity and the effect of polarity.
The force that stops a jet plane as it lands on the flight deck of an aircraft
carrier is provided by a series of arresting cables. These cables act like
extremely stiff rubber bands, stretching enough to keep from slowing the plane
down too suddenly. A Hornet jet with a mass of 1.3 x 10 kg lands with an
acceleration of -27.6 m/s squared. How large is the unbalanced force that the arresting
cables exert on the plane?
Answer:
358,800N
Explanation:
F(orce) = mass × a(cceleration)
Found it online while looking for the same question lol
I need help please! This is a question on genetics!
Explanation:
first - red
second- both red and pink
third - both red and pink
Why does ice have the lowest density?
Answer:
Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.
How does each organism’s niche and habitat play a part in each type of symbiosis?
Answer:
The answer is B
Explanation:
I know it's B because I did this question before.
hope this helps :)
How many times farther from the Sun is Uranus (distance = 19.20 AU) than Saturn (distance = 9.58 AU)?
Answer:
Water is a polar molecule because one area is ________________ and another area is ______________________.
Explanation:
Uranus is approximately 2 times farther from the Sun than Saturn.
What is Uranus?Uranus is a planet in our solar system, orbiting the Sun at an average distance of about 1.8 billion miles (2.9 billion kilometers) or 19.2 astronomical units (AU). It is the seventh planet from the Sun and the third-largest planet in our solar system, with a diameter of about 31,518 miles (50,724 kilometers).
The distance from the Sun to Uranus is 19.20 astronomical units (AU), and the distance from the Sun to Saturn is 9.58 AU. To find how many times farther Uranus is from the Sun than Saturn, we can divide the distance to Uranus by the distance to Saturn:
distance to Uranus / distance to Saturn = 19.20 AU / 9.58 AU = 2.00
Therefore, Uranus is approximately 2 times farther from the Sun than Saturn.
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Kelly walked through this part of the forest. What phase changes happened as the water moved from the oceans to the forest to Kelly's head?
please help me asap
Answer:
Explanation:
It changed from liquid to gas to liquidity
2. True or False
Only people who wore glasses as children need glasses for reading as they get older.
Answer:
false
Explanation:
Which of the following is not a characteristic of enzymes?
F
they are proteins
G
they act as a catalyst
H
they react with a specific substrate
they are unaffected by changes in temperature
J
they are unaffected by changes in temperature
Answer:
they are unaffected by changes in temperature. t
Explanation:
that's the answer J. u kinda wrote it in two places.
The pictures below show a hot spring and a geyser.
image on the left is a hotspring, image on the right is a geyser
Which of these statements is correct about the hot spring and geyser shown in the pictures?
Both are formed when the groundwater erodes limestone.
Both are formed when the groundwater gets heated.
The hot spring is formed by the heating of groundwater and the geyser is formed by the erosion of limestone by groundwater.
The hot spring is formed by the erosion of limestone by groundwater and the geyser is formed by the heating of groundwater.
Answer:
Both are formed when the groundwater gets heated
Explanation:
This is correctamundo
"why?"- you ask
well because when groundwater gets all hot and worked up we get a result in the form of geysers and hotsprings!
Have a great day and wash your hands and STOP TOUCHING YOUR FACE!
jk haha- please don't be take this seriously good day to you all!
Answer:
B. Both are formed when the groundwater gets heated.
Explanation:
Hot springs and geysers are very similar when it comes to how they are formed. The obvious difference is that geysers force up jets of water, whilst hot springs flow water out on their own. They are both formed when the groundwater gets heated from molten rock(magma).
This is reliable because I took the same quiz and got the question right.
A scientist uses electricity to break down water into hydrogen gas and oxygen gas. Which statement best explains what happens? A. A chemical change occurs. O B. A base neutralizes an acid. O c. An acid neutralizes a base. O D. A physical change occurs.
Answer:
A. A chemical change occurs.
Explanation:
Selectively permeable membranes are important in cell function. What makes a membrane selectively permeable?
A.The ability to remove bacteria from the cell
B.The ability to use energy to make proteins used in the cell
C.The ability to modify, sort and package proteins and lipids for storage or transport out of the cell
D.The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell
The statement that makes a membrane selectively permeable is as follows:
The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell.Thus, the correct option for this question is D.
What is a Selectively permeable membrane?A Selectively permeable membrane may be defined as a type of membrane that permits the entry of specific substances and the exit of a few substances but significantly prevents the transport of other substances through it.
This action of a selectively permeable membrane protects the cell from any unwanted impurities and damage. It also regulates the balance in the internal environment of the cell by the passage of toxic or unwanted substances outside the cell.
Therefore, the correct option for this question is D.
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Gorge and Hattie want to perform a set of experiments to test the optimal water and sunlight levels of a certain species of pea plant.
Gorge decides to test the amount of water that the species needs to thrive. He takes 24 pea plants and separates them into four equal groups and gives each group a different daily amount of water. He keeps all other environmental conditions the same for each group. He measures the initial height of all the pea plants and then measures their growth after one month.
Gorge averages the data from the individual pea plants and comes up with an average for each group, which he reports in the table below.
After Gorge's experiment is complete, Hattie decides to test the optimal sunlight exposure for this species. She takes 24 pea plants and separates them into four equal groups and exposes each group to a differing daily amount of sunlight. She keeps all other environmental conditions the same for each group, including giving each group 15 mL of water daily. She measures the initial height of all the pea plants and then measures their growth after one month.
Hattie averages the data from the individual pea plants and comes up with an average for each group, which she reports in the table below.
Which of the following conclusions can be made based on the results of these investigations?
A.
This species of pea plant grows best when given 15 mL of water and four hours of sunlight daily.
B.
This species of pea plant grows best when given 15 mL of water and three hours of sunlight daily.
C.
This species of pea plant grows best when given 5 mL of water and one hour of sunlight daily.
D.
This species of pea plant grows best when given 5 mL of water and four hours of sunlight daily.
Answer:
b
Explanation:
study island
Answer:
This species of pea plant grows best when given 15 mL of water and three hours of sunlight daily.
Explanation:
the other guy is WRONG, That is the REAL answer
What do seals and birds have in common in the food web?
Answer:
Well.
Explanation:
Well, for the most part, both seals and birds eat fish.
And, both seals and birds get eaten by sharks.
How many different ELEMENTS are in Na2SO4?
A.)1
B.)3
C.)6
D.)7
Answer:
D, 7
Explanation:
In one molecule of sodium sulfate, or Na2 SO4, there are seven atoms in all. The chemical formula for this molecule tells us this.
Which event or principle CANNOT have its validity directly tested by laboratory experiment?
Select one:
a. the big bang theory
b. the conservation of energy
c. the periodicity of element properties
d. the acceleration of objects due to gravity
What are the two leading causes of CO2 being in the atmosphere?
what is the function of centiroles?
Answer:
Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
Explanation:
Answer:
Explanation:
Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
What is 'b' in this linear equation? y = 5x - 6
