Answer:
All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere). ... Flooding rivers wash away soil.
Which of the following statements best describes negative feedback loops?
A. They respond to changes with changes in the same direction, to move a value toward an endpoint.
B. They produce negative outcomes for the organism.
C. They aren't used often in maintaining homeostasis.
D. They respond to changes with changes in the opposite direction, to keep a value in the optimal range.
Answer:
B but if I'm wrong I'm so sorry I'm really tired but I think I'm right
Explanation:
if tanA= x/y find the value of xsinA+ycisB
Answer:
If tan A = 3 / 5, then sin A = 3√34 / 34 and cos A = 5√34 / 34 .
Assuming x = 5 and y = 3 (The problem is deficient in this regard)
5(3√34 / 34) + 3(5√34 / 34)
30√34 / 34
15√34 / 17
Explanation:
I hope this helps!
PLEASE HELP GENETIC INFORMATION
Answer:
No-1st
No-2nd
No-3rd
Yes-4th
No-5th
Explanation:
No to 1st one
No to 2nd one
No to 3rd one
Yes to 4th one
No to 5th one
No means DON'T PICK THAT ONE
Yes means pick that one
Why do plant cells need chloroplasts?
Answer:
Because chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.
Which part of the plant...
1. Transmits sunlight =
2.Takes in CO2, releases O2 =
3. Uses Sun's energy to make glucose =
4. Chloroplasts are located here =
5. Transports sugars made =
6. Stores sugars =
Answer:
1: Chlorophyll
2: Stomata
3: Leaf Chloroplasts
4: Leaf Mesophyll
5: Phloem
6: Starch
Explanation:
Just did a few quick google searches so there is a small possibility that I'm wrong.
Why do planets close to the sun have thin atmospheres and the planets far away from the sun have thick atmospheres. Use what you know about the nebular theory.
Answer:
There are two primary factors: size and distance from the Sun. Gravity helps planets and moons to hold on to their atmospheres, so small planets/moons such as Mars and the Moon have thin atmospheres. The reason why the outer planets are larger is probably down to two major factors. The first is simply the amount of material available which may be accreted to a planet. Clearly, the further away from the Sun, the longer the orbit (twice as far means an orbit twice the physical length).
Explanation:
what is the diploid & haploid number?
Answer:
Haploide tiene solo un conjunto de cromosomas
Diploides tienen dos conjuntos de cromosomas
En los humanos las células somáticas son diploides.
Explanation:
Se encuentran células diploides en la piel, la sangre, células musculares
Las células haploides se utilizan en la reproducción sexual X Y
The soft parts of animals which have become fossils are usually destroyed by
Rachal Corporation produces and sells a single product whose selling price is $150.00 per unit and whose variable expense is $57.00 per unit. The company's monthly fixed expense is $381,300.
Required:
a. Assume the company's monthly target profit is $9,300. Determine the unit sales to attain that target profit. Show your work!
b. Assume the company's monthly target profit is $18,600. Determine the dollar sales to attain that target profit. Show your work!
Answer:a) if the company's monthly target profit is $9,300, 4,200 units sales is needed
b) if the company's monthly target profit is $18,600, 4,300 units sales is needed
Explanation:
Using The Contribution Margin Approach:
Contribution Margin = Sales expense - variable expense
=$150.00 - $57.00
=$93
Contribution Margin Ratio= Contribution Margin/ sales expense x 100
=93/150 x 100
= 62%
Assume the company's monthly target profit is $9,300.
A) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin ratio]
= ($381,300. + $9,300) ÷ 0.62
$390,600 ÷ 0.62
= $630,000
No. of units to be sold =Sales to attain the target profit/ selling price
$630,000/$150.00
=4,200 units
Assume the company's monthly target profit is $18,600
B) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin ratio]
= ($381,300. + $18,600 )÷ 0.62
$399,900 ÷ 0.62
= $645,000
No. of units to be sold =Sales to attain the target profit/ selling price
$645,000/$150.00
=4,300 units
Hydrogen bonds form _______
A. to hold one molecule of water together, bonding one hydrogen atom and two oxygen atoms.
B. between the positively charged oxygen of one water molecule and the negatively charged hydrogen of another water molecule.
C. between the negatively charged oxygen of one water molecule and a positively charged hydrogen of another water molecule.
D. to hold one molecule of water together, bonding one oxygen atom and two hydrogen atoms
Answer:
C. between the negatively charged oxygen of one water molecule and a positively charged hydrogen of another water molecule.
Explanation:
When you sweat a lot the amount of water in your blood can drop. Your cells have to maintain a certain level of water and salt in order to function properly. Which systems work together to help maintain homeostasis when you are dehydrated?
Group of answer choices
The nervous system sends a message to the musculoskeletal system to increase the amount of sweat produced.
The nervous system sends a signal to the digestive system to reduce the absorption of water from the digested food.
The respiratory system breathes faster sending a message to the nervous system to reduce heat.
The circulatory system’s lack of water causes the nervous system to signal the excretory system to reduce the amount of water it takes from the body to produce urine.
Answer:
The circulatory system’s lack of water causes the nervous system to signal the excretory system to reduce the amount of water it takes from the body to produce urine.
Explanation:
endocrine, nervous, and muscular systems work together and maintain temperature homeostasis.
Small cells have a higher _______ to volume ratio. That means for a given Small cells have a higher volume, there is a lot more cell membrane.
What is the atomic number of this atom?a,b,c
08
13
09
o 5
4,
Answer:
oxygen has the atomic number 8
13 is aluminum
09 is fluorine
05 is boron
4 beryllium
When sleeping overnight, a person doesn't eat for many hours and blood sugar decreases. How does negative feedback work to affect this physiological value in a healthy person?
A. Insulin is released to cause cells to release glucose into the bloodstream.
B. Glucagon is released to cause cells to absorb glucose from the bloodstream.
C. Glucagon is released to cause cells to release glucose into the bloodstream.
D. Insulin is released to cause cells to absorb glucose from the bloodstream.
Answer:
It is c
Explanation:
C is the answer ur looking for my guy
if a sample contains 20g of an isotope that has a half life of 1000 years how much will be left after 2000 years
After 2000 years, there will be 5g of the isotope remaining.
What is an isotope?If an isotope has a half-life of 1000 years, it means that after 1000 years, half of the original sample will have decayed. After another 1000 years (2000 years total), half of the remaining sample will have decayed, and so on.
To calculate how much of the sample will be left after 2000 years, we can use the following formula:
[tex]N = N_{0} * (1/2)^ (t/T)[/tex]
where:
N = the amount of the isotope remaining after time t
N0 = the initial amount of the isotope
t = the time that has elapsed
T = the half-life of the isotope
Plugging in the values from the problem, we get:
N = 20g * (1/2)^(2000/1000)
N = 20g * (1/2)^2
N = 20g * 1/4
N = 5g
Therefore, after 2000 years, there will be 5g of the isotope remaining.
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Oncologists are doctors which specialize in diagnosing and treating cancer. Certain cancers have markers on the surface of affected cells. Which microscope would be the best choice for viewing these cell markersq
Answer:
I'm pretty sure it is scanning electron microscope
Explanation:
Oncologists are doctors which specialize in diagnosing and treating cancer. Certain cancers have markers on the surface of affected cells. Scanning electron microscope is used for viewing these cells.
what is scanning electron microscope ?Microscopes can be used to view minute specimens and different types of microscopes are used for various purposes which include compound microscope, transmission electron microscope, dissection microscope, scanning electron microscope etc.
Scanning Electron Microscope (SEM) is an electron microscope which scans surfaces of microorganisms and uses a low energy based beam of electrons.
The Principle behind the working of the Scanning Electron Microscope include the transmission Electron Microscope and it uses transmitted electrons and emitted electrons.
This microscope produce three-dimensional images of a specimen by using focused beam of electrons, generate different signals and it is used for three-dimensional image surfaces at the atomic level where the good resolution is to be 0.01 nm depth resolution and 0.1 nm lateral resolution.
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When looking across the periodic table from left to right, which of these groups are the first to contain nonmetals?
Answer:
3 A the 13 group boron is the nonmetal in it and in 14 group carbon is the nonmetal
Explanation:
The swallowing phase where the velopharynx closes forcefully and larynx completely closes at 3 levels is the...
a. Tongue preparatory phase
b. Pharyngeal transport phase
c. Oral transport phase
d. Laryngeal transport phase
Answer:
b. Pharyngeal transport phase
Explanation:
During the pharyngeal phase, the vocal folds close to keep food and liquids from entering the airway.
Swallowing the velopharynx closes forcefully and the larynx completely close at the level of the pharyngeal transport phase this action seal the airway passage, hence option b is correct.
What is swallowing ?According to where the bolus is located, the swallowing process is often split into oral, pharyngeal, and esophageal phases. When consuming solid food vs drinking liquid, the food moves differently through the oral cavity and into the oropharynx.
The tongue closes the oropharynx while it is in the pharyngeal phase. The proximal pharyngeal wall and soft palate serve as a barrier to the nasopharynx.
The laryngeal entrance is sealed off by the vocal cords and arytenoids, and the epiglottis swings down to cover the laryngeal vestibule. These acts close up the pharyngeal cavity's airway.
Therefore at 3 levels, the velopharynx closes forcefully and the larynx completely closes in the pharyngeal transport phase action to seal the airway passage, hence option b is correct.
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What do the dotted lines, indicated with the arrow, represent in the DNA model above?
The junctions of codons between individual strands
The bond between deoxyribose molecules and phosphates
The monomers that make up a polymer
The hydrogen bond between complimentary nucleotides
Answer:
The hydrogen bond between complimentary nucleotides
Explanation:
I took the test
In the DNA model, the dotted line represents the hydrogen bonds between the nucleotides.
What is DNA?
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule and a phosphate group. A base, phosphate sugar are together called as nucleotides.
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If the frequency of the black allele %B allele for the moth coloration gene in the newly founded island population of moths in your genetic drift lab simulation was 78% what was the frequency of the white allele %b allele in the same population at the same time? A. 19.5% B. 22% C. 39% D. 78% or E. Impossible to determine
Answer:A
Explanation:
Under genetic drift effects, the allelic and genotypic frequencies of a population change through generations. In the exposed example, the frequency of the white allele in the same population at the same time is f(b) = 22%.
-------------------------
Available data:
Frequency of the dominant allele, B = 78% = 0.78 Frequency of the recessive allele, b = ??Genetic drift lab simulation ⇒ Founder effectWe need to find out the frequency of the recessive allele is this new population. But before answering the question, let us review what the genetic drift is.
Genetic drift is an evolutionary mechanism. Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. Its effects are harder in a small-sized population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure -bottleneck effect- or because of a population split -founder effect-.When the small population increases in size, it will have a genetically different composition from the original one. Genetic variability is reduced, and there exists the possibility of developing a peculiar allelic composition.
According to this information, we know that allelic frequencies vary from generation to generation. So probably, if we need to calculate allelic and genotypic frequencies in the next generation, they will be different from the frequencies in this generation.
However, in this problem, we need to determine the frequency of the recessive allele at the same time, meaning in the present generation.
Since they are frequencies, their addition must equal one. So all we need to do is to clear the following equation,
p + q = 1
being
p the dominant allele frequency, f(B) = 0.78q the recessive allele frequency, f(b) = ??0.78 + q = 1
q = 1 - 0.78
q = 0.22 = 22%
The frequency of the white allele in the same population at the same time is f(b) = 22%.
---------------------------
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The number of waves passing the observer per second is:
- the wavelength
- the amplitude
-the frequency
- the period
Answer:
frequency
Explanation:
comment if im wrong
The number of waves passing the observer per second is the frequency. Hence, the correct option is C.
What is frequency?Frequency refers to the number of waves that pass from a fixed point in unit time. It is a measure of the rate of repetition of a periodic phenomenon such as vibration or a wave.
It is measured in hertz (Hz), an international unit of measure where 1 hertz is equal to 1 cycle per second. The more cycles that occur per second, the higher the frequency of the system is.
For example-The human heart beats at a frequency of 68 beats per minute.
In general, frequency is a very important concept in many fields including physics, engineering, music and the natural sciences, and it is used to describe and analyze a wide range of periodic phenomenon.
Therefore, the correct option is C i.e., frequency.
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2. Which 2 organelles are found in BOTH plants and animals? *
Answer:
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
When the concentration of molecules is the same throughout the space the molecules
occupy, the molecules are in
Explanation:
Diffusion will eventually cause the concentration of molecules to be the same throughout the space the molecules occupy, when they will be in equilibrium.
Ice wedging into the rock and breaking and crAcking the rock and soil
Answer:
Ice wedging is a process that happens when water gets into the cracks of concrete, stones, other forms of the Earth, and freezes. When the water freezes, it expands and pushes the rock from the crack which either separates and turns it into two rocks, or the rock might form together again and just be a larger rock. This process happens in Winter and usually finished in Spring when the ice between the rocks melt. I have described the process of ice wedging for you.
Please Help I'll give branliest!!!
Answer:
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What is the relationship between snails and Elodia
Answer:
The relationship between snails and elodea is symbiotic in that the snail eats algae and produces carbon dioxide. The elodea takes in the carbon dioxide and, through photosynthesis, creates oxygen, which the snail and every living thing in the tank uses to breathe.
Explanation:
hope it helps you!!
n.kjbhykvgtcf vbhijbhjjbhiygihkjbm
The flame of many stove burners is blue, but the wires of a toaster glow orange. How do you think the temperatures of these two cooking appliances compare?
Answer:
the hotter is it, the more bluish it is. And the more reddish it is, the colder it is
just like the bluer the star, the hotter it is, the redder the star, the colder it is.
Comparing the temperatures of the two cooking appliances ; The temperature emitted in stove burners are hotter than the temperatures emitted by the toaster
White-Blue flames are the hottest flames when combined together but the hottest single flame is the blue flame burning between ( 2,600º F and 3,000º F). Blue flames have more oxygen than other types of flames, hence they burn hottest and this is because gases when burnt are hotter than other materials. while
The orange flame of a toaster burns at a temperature between ( 1100°C to 1200°C) . releasing carbon monoxide as it burns.
Hence we can conclude that The temperature emitted in stove burners are hotter than the temperatures emitted by the wires of a toaster.
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The overall chemical equation that describes photosynthesis is shown below.
600, + 6H20 - CH12O6 + 60,
By analyzing this equation, which property of photosynthesis can be identified?
A the chemical changes that occur during the light independent reactions
B. the chemical changes that occur during the light dependent reactions
C. the source of carbon atoms in the carbohydrate product
D. the identities and roles of electron carriers
Answer:
A
Explanation:
Occur during light reaction process to manufacture food and release oxygen
.
The overall chemical equation that describes photosynthesis is the chemical changes that occur during the light independent reactions(option -A).
Why is the process of photosynthesis named that?Light energy is converted into chemical energy during photosynthesis by phototrophs, which is subsequently used to drive cellular functions. The form in which the chemical energy is stored is in the form of sugars, which are produced from water and carbon dioxide.
Photosynthesis' main job is to transform solar energy into chemical energy and then store that chemical energy for later use. The majority of the planet's biological systems are propelled by this process.
Anoxygenic and oxygenic photosynthesis are the two forms. The former is the more prevalent type, found in plants, algae, and cyanobacteria, and they both operate on very similar principles.
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#teamtrees
Please support the cause. If we all plant a tree, just 1 each, even 1 per family, it will save us from the future that global warming will bring us without these trees. plant a tree today and say to yourself, "wow i just planted a tree for a very important cause, and i saved someone's life today!"
===================================================================
Answer:
ok
Explanation:
Answer:
Well said m8. POGCHAMP
Explanation:
#teamtrees #WAP (Water And Plant) #ELM (Every Life Matters)
By their experimentation using the Neurospora fungus, Beadle and Tatum were able to propose the far-reaching hypothesis that ________
Answer:
one gene produces a specific enzyme
Explanation:
The one gene-one enzyme hypothesis states that one gene specifies the production of a specific enzyme. This concept is based on Beadle and Tatum's experiment. Beadle and Tatum irradiated Neurospora spores with X-ray in order to induce mutations, then they crossed mutant strains with non-irradiated Neurospora strains. Finally, Beadle and Tatum observed that some mutant spores would not grow without addition of arginine (Arg) residues to the culture, thereby suggesting that each gene is responsible for the synthesis of one enzyme.
