Answer:
A sound wave, I'd assume.
Explanation:
The Earth remained a frozen snow ball until carbon dioxide levels in the atmosphere increased. Why did carbon dioxide from the volcanoes fill the atmosphere?
Answer:
Because the land surface was then largely covered in ice, continental weathering effectively ceased. This locked the planet into a 'Snowball Earth' state until carbon dioxide released from ongoing volcanic activity warmed the atmosphere sufficiently to rapidly melt the ice cover. This model does not, however, explain one of the most puzzling features of this rapid deglaciation; namely the global formation of hundreds of metres thick deposits known as 'cap carbonates', in warm waters after Snowball Earth events.
The Southampton-led research, published in Nature Geoscience, now offers an explanation for these major changes in ocean chemistry.
Lead author of the study Dr Tom Gernon, Lecturer in Earth Science at the University of Southampton, said: "When volcanic material is deposited in the oceans it undergoes very rapid and profound chemical alteration that impacts the biogeochemistry of the oceans. We find that many geological and geochemical phenomena associated with Snowball Earth are consistent with extensive submarine volcanism along shallo
Explanation:
Your body always needs energy. What do you use first, second, and third for energy?
Answer:
eat drink water take a shower take a walk
Answer:
first: glucose
second: starches
third: fats
Explanation:
You have isolated and purified a new species of cells from the rain forest and you want to place this new species in the appropriate branch of the tree of life. You sequence the ribosomal RNA genes from these cells and discover that for one particular region of the ribosomal gene (the rRNA) the RNA sequence is AAUGAAGG. You have sequences from the same region of the ribosomal genes (the rRNA) from each of these species: bacteria, eukaryote and archaea, which are listed below.
bacteria AUAGAUGG
eukaryote AAAGAAGG
archaea AAUGGAGU
Based on these sequence results, to which branch of the tree of life should you assign this new species?
a. eukaryote
b. archaea
c. bacterial
d. bacteria and archaea
e. There is not enough information.
Answer:
The correct answer is: option A. eukaryote.
Explanation:
The sequence of the newly found rRNA is AAUGAAGG is similar to the sequence is given for the eukaryote which is AAAGAAGG, there is only one exception at 3thirs position of the sequence which is instead of uracil there is adenosine. However, this could be a result of the transversion mutation where A converted into U of the period of evolution.
On the other hand, the rRNA of bacteria and archaea have a very high difference in their sequence with a change in one than one base.
Since the initial acceptance of cell theory, recent advances in biotechnology have provided scientists with far more information about the structure and function of cells. How has the discovery of DNA and our current understanding of the cell cycle affected cell theory?
A. Cell theory was rejected after new evidence showed that DNA contains hereditary information.
B. Cell theory was elevated to a scientific law.
C. Cell theory was expanded to include new components.
D. Cell theory was replaced by a new theory that includes viruses as basic units of life.
Answer:
c
Explanation:
can't be a because
the cell theory is still around it was not rejected nor can it be b because Cell theory is a theory, not a law because the cell theory does not have enough support to become a law. nor can it be d bc its still around it was not replaced. c makes the most sense bc The expanded version of the cell theory can also include: Cells carry genetic material passed to daughter cells during cellular division. All cells are essentially the same in chemical composition. Energy flow (metabolism and biochemistry) occurs within cells. hope i helped
Gymnosperms are classified as which of the following?
O Vascular
Non-vascular
Monocot
Dicot
Answer:
D. Dicot
Explanation:
...... .............. ..
why must controlled fires be set in some ecosystems? what are some advantages and disadvantages?
Answer:well dry areas could catch fire and become out of hand or some plants may be harmed due to smoke
advantages:trimming area and making room
disadnstages:possible forest fire,harms plants,ruins animals homes
Explanation:
Two students are given cubic boxes, measuring 10 cm on a side. Robert puts a single glass marble with a
diameter of 10 cm in the box. Susan puts 1,000 1-cm glass marbles in her box.
1. Whose box has more empty space? Explain.
Answer:
Both boxes have the same amount of empty space
Explanation:
Given
Cube Box
[tex]Length = 10cm[/tex]
Robert:
1 glass marble
[tex]Diameter = 10cm[/tex]
Susan:
1000 glass marble
[tex]Diameter = 1cm[/tex]
Required
Whose box has more empty space?
First, we need to calculate the volume of the cubic box.
[tex]Volume = Length^3[/tex]
Substitute 10cm for Length
[tex]Volume = 10^3[/tex]
[tex]Volume = 1000cm^3[/tex]
Next, calculate the volume of Robert's glass
Volume is calculated as:
[tex]Volume = \frac{4}{3}\pi r^3[/tex] ---- Volume of a sphere
Where
r = radius
[tex]r = \frac{1}{2} * Diameter[/tex]
[tex]Diameter = 10cm[/tex] --- Given
Substitute 10 for diameter
[tex]r = \frac{1}{2} * 10cm[/tex]
[tex]r = 5cm[/tex]
So:
[tex]Volume = \frac{4}{3}\pi r^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 5^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 125[/tex]
[tex]Volume = 523.8cm^3[/tex]
Next, we determine the volume of Susan's 1000 glasses
Volume is calculated as:
[tex]Volume = \frac{4}{3}\pi r^3[/tex] ---- Volume of a sphere
Where
r = radius
[tex]r = \frac{1}{2} * Diameter[/tex]
[tex]Diameter = 1cm[/tex] --- Given
Substitute 1cm for diameter
[tex]r = \frac{1}{2} * 1cm[/tex]
[tex]r = 0.5cm[/tex]
Substitute 0.5cm for radius in [tex]Volume = \frac{4}{3}\pi r^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 0.5^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 0.125[/tex]
[tex]Volume = 0.5238[/tex]
But there are 1000 glasses.
So, the volume of 1000 glasses is:
[tex]Volume = 0.5238 * 1000[/tex]
[tex]Volume = 523.8cm^3[/tex]
--------------------------------------------------------------------------------------------------------------
For Robert:
[tex]Volume = 523.8cm^3[/tex]
For Susan:
[tex]Volume = 523.8cm^3[/tex]
Since, they have the same volume.
Both boxes have the same amount of empty space
From the dimensions of glass marble for robert and susan, we can say that; none of the given boxes have more empty space.
We are told that the cubic boxes have a measure of 10 cm for its' sides.
Formula for volume of a cube is;
V = lwh
where;
l is length
w is width
h is height
Thus; V = 10 × 10 × 10
V = 1000 cm³
For Robert;
We are told that he puts a glass marble with a diameter of 10 cm in the box. The glass is usually spherical in shape and the volume of a sphere is;
V = ⁴/₃πr³
Thus;
V_rob = ⁴/₃π × (10/2)³
V_rob = 523.6 cm³
Volume left for rob = 1000 - 523.6
Volume of empty space left for rob = 476.4 cm³
For Susan;
V = ⁴/₃πr³
Thus;
V_sus = ⁴/₃π × (1/2)³ × 1000
V_sus = 523.6 cm³
Volume left for susan = 1000 - 523.6
Volume of empty space left for susan = 476.4 cm³
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NaCl dissociates into 2 particles in water Na and Cl. If the solution in question 4 contained 0. IM NaCl instead of 0.IM sucrose, what is the of the solution, and in which direction would the net flow of water be?
Answer:
-4.87 (see image for further explanation)
Explanation:
Water potential of solution will be − 4.87 The direction of water potential will be out of root into salt solution.
What is water potential?ψ = iCRT
Where, i = −2,
T = 273+ 20
R= 0.831
ψ = ( −2 ) ( 1) (0.831) ( 273+ 20)
= − 4.87bars
Water potential of a substance is equal to pressure
Ψ = ΨS + ΨP
Ψ = 0 + ( 4.87)
= − 4.87bars
Therefore, Water potential of solution will be − 4.87 The direction of water potential will be out of root into salt solution.
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what is the most common type of petrified remain fossils
Answer:
After an organism is buried, minerals carried by water such as silica, calcite or pyrite replace the organic material in the fossil. Some common examples are most dinosaur bones, petrified wood, and many trilobite fossils.
Answer:
The answer is wood
Explanation:
Help please lollll .
Answer:
the answer is an organ system
Explanation:
the following in NOT a component of a prokaryotic cell
a. nucleus
b. ribosomes
c. cell wall
d. flagella
In 20 words or fewer, what science questions would you ask about the video?
Answer:
What is the video about? Who came up within the Concept
Explanation:
A rock rests completely still at the top edge of a tall cliff. The rock has - () 17 points
no kinetic energy of potential energy
a lot of kinetic energy but no potential energy
a lot of potential energy but no kinetic energy
both kinetic energy and potential energy
Is brown algae a plant like protist or a fungi like protist? Why?
Answer:
brown algae is seaweed
Explanation:
which is a plant
how can drip irrigation be useful in farming
Answer: It helps control the water better and more efficiently. It also helps to save water
Explanation:
Believe it or not, ____________ within an ecosystem is NOT transferred back and forth between all levels. Energy begins with the ____________ and flows in ____ direction to ____________, to ____________, and, finally, to ____________.
Answer:
Energy
Sun
One
producers
Consumers
Decomposers
Explanation:
Believe it or not, __Energy__ within an ecosystem is NOT transferred back and forth between all levels. Energy begins with the __Sun__ and flows in __One__ direction to _producers_, to _Consumers_, and, finally, to _Decomposers_.
There are two different types of cell transportation. Which of the following requires energy?
a. Facilitated Diffusion
b. Active Transport
c. Osmosis
d. Simple Diffusion
please help :))
Answer:
The type of cellular transport that requires energy is active transport (option b).
Explanation:
Active transport —unlike passive transport— involves the passage of molecules or substances through the membrane against a concentration gradient, a process that requires the use of energy.
In the case of active transport the energy for the process comes from the ATP molecule and the mechanism for this to be possible is by means of an ATPase incorporated into the transporter.
The transport of glucose and the sodium-potassium and calcium pumps are examples of this type of transport.
The other options are not correct because simple diffusion, facilitated diffusion and osmosis are passive transport mechanisms that do not require the use of energy.
what creates the bubble like film on the surface of water
Answer:
Surface tension
Explanation:
what is the names of these 2 muscles? it's an arm btw
what do you think causes different phenotypes in organisms how does the phenotype depend on its genes (genotype)
Answer:
They difference in phenotypes is dependent on the genes. The more dominant gene will overpower a recessive gene, or if there are two recessive genes together, that will be the phenotype. When things are cross breaded they introduce different genotypes that allow for different looking phenotypes.
Example: Dominant blue flower (Bb) mixed with recessive yellow flower (bb)
B b
b Bb bb
b Bb bb
There is a 50/50 chance the offspring will be either blue or yellow
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that. When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
What is phenotype?A "phenotype" is simply an observable trait. "Pheno" simply means "observe," and it derives from the same root as "phenomenon."
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that.
When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
Thus, in this way, phenotype is dependent on genotype of the organism.
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29
30
5.5. The smallest cell in the world is:
Answer:
Mycoplasma
Explanation:
It is about 10 micrometers in size.
Gizmo:
Observe: Select Add, and then click in the center of the landscape exactly four times. Click Horizontal view and use the Zoom in tool to magnify the landscape.
A.
What feature have you created?
B.
Look at each contour line on the horizontal view at left. What do you notice?
Answer:
answer a is trash answer b add a vertical line
Explanation:
Marine biology I need this as fast as you can please and thank you. 20 points.
Formerly classified under algae, (*blank*) are a group of organisms that biologists now place under kingdom (*blank*). Many species of this group perform the important role of making an essential nutrient available to other organisms and are therefore called (*blank*).
Answer:
Formerly classified under algae, Protista are a group of organisms that biologists now place under kingdom Plantae. Many species of this group perform the important role of making an essential nutrient available to other organisms and are therefore called autotrophs/producers.
Explanation:
The first and second blanks are the right answers, but the third blank could be autotrophs or producers.Describe the path that energy takes, from solar energy reaching earths surface to energy used to power cell processes in animals
The path that energy takes, from solar energy reaching the earth's surface to energy used to power cell processes in animals - Animals eat the grass that captures the energy from the sun which gives the animal nutrients
The Sun is the primary source of energy for organisms and the ecosystems of which they are part.
Producers, such as plants and algae, get their energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.This process begins the flow of energy through almost all food webs.The energy present in these photosynthetic organisms store then transferred to various animals when they feed on these plants and algae and get their food and energy.Thus, the correct answer would be - Animals eat the grass that captures the energy from the sun which gives the animal nutrients
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Which statement best describes a keystone species?
O A. It is the largest population in the community.
B. It occupies the highest trophic level in the
community
C. Its absence would affect many organisms in the
community.
O D. It is the largest animal in the community.
I NEED ANWERS ASAP!!!When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point?
Answer:
If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.
Explanation:
Answer:
If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.
Sorry I'm late but I hope this helps someone lol
Explanation:
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guys pls help...who are the energy forms in biology pls a have an project
Answer:
electrical energy, light energy, mechanical energy, and heat energy? or maybe Kinetic, potential, and chemical energy
Explanation:
Which of the following is defined as a process of weathering able to move rock and soil particles from one area and deposit them in another?
A. expansion
B. decomposition
C. erosion
D. hydrolysis
Answer. erosion..eriosion is the movement of rock and solid particles from one area to another.
Explanation: