Answers
Explanation:
71% of the Earth----All of water on Earth
97%of water on Earth----- Salt water
77%of the freshwater on Earth------Frozen in Glaciers
22% of fresh water on Earth----- water Underground
Related Questions
10. What adaptations allow polar bears to walk on ice without slipping?
O Only Pilli
O Only long claws
Pilli and long claws
Papillae and long claws
Answers
how many molecules are in 2fe203
Answers
Answer:
2 molecules.
Explanation:
In 2Fe203, there are two molecules because Fe203 is a molecule which is made up of two atoms i.e. iron and oxygen atom. In one molecules of Fe203, there are 5 atoms so in 2 molecules of Fe203, there are 10 atoms. The digit present in front or to the left side shows number of molecules so that's why we can say that there are only two molecules in 2Fe203. The name of this molecule is iron oxide.
[a] if a tightly scaled syringe containing 20 cubic centimetre of air is placed in hot water for some time and then removed what will happen to the volume of air when the syringe is placed in hot water? [ii]explain your answer in terms of particle arrangement and temperature change [iii]name the process described by the change above [b] what will happen to the volume of air after the syringe is removed hot water? [i]explain your answer in terms of particle arrangement and temperature change [ii]name the process described by the change above
Answers
Answer:
Volume of air increases.
Explanation:
The volume of air increases in the syringe when the syringe is placed in hot water because the volume of air increases when the temperature is increases. According to Charles's Law which states that, at a fixed pressure, the volume of a given amount of gas is directly proportional to its temperature so if there is increase in temperature so the the volume of gas present in a container or syringe increases and vice versa.
A scientist studying fossils in undisturbed layers of rock identified a species that appeared to not have changed a lot over the years. Which observation would have most likely led him to this conclusion?
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Answer:
After studying the fossil, the person can figure out which animal it might be of the records of animals we know of, by taking bone tests, etc. they can see the DNA of the animal. The bone structure can show the animal looked different, or even could figure that out through the DNA. During the years, it could've mated with other animals creating an updated breed, or simply just changing to fit into new environments aka evolving
Explanation:
Hope that helps
PLs, help me with this question
Answers
Answer:
Amino acids
Explanation:
Runoff from farmland into a river is an example of what???
Answers
Answer:
It would be a form of pollution due to the runoff of chemicals which harm the marine life while helping with the growth of algea more suitably known as
EUTROPHICATION
Explanation:
What are the reactants in
photosynthesis?
Answers
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
In humans, widow's peak (A) is dominant over a continuous hairline (a), and short fingers (B) are dominant over long fingers (b). Two individuals with widow's peak and short fingers have a child with continuous hairline and long fingers. Determine the genotypes of the parents.
Answers
Answer:
Both parents are heterozygous for the traits and exhibit the dominant phenotype → AaBb
Explanation:
Available data:
widow's peak (A) is dominant over a continuous hairline (a)short fingers (B) are dominant over long fingers (b)Cross: Two individuals with widow's peak and short fingersF1) a child with continuous hairline and long fingersGenotypes Phenotypes
AA and Aa individuals with widow's peakaa individuals with no widow's peakBB and Bb shorted-fingered individualsbb longed-fingered individualsCross:
Parentals) A-B- x A-B-
Note: the - symbol represents either a dominant or recessive allele.
F1) child with continuous hairline and long fingers → aabb
Each parent provided one allele for each trait to the child. So the child inherited one recessive allele a and one recessive allele b from EACH parent. The fact that both parents could provide one recessive allele to the child for each character, indicates that both parents are heterozygous for the trait. It is the only way of having a child who expresses the double recessive trait.
Parentals genotypes → AaBb x AaBbChild → aabbWhat is a type of so without a membrane bound and useless and without membrane-bound organelles
A. Eukaryotic cell
B. Plant cell
C. Elements
D. Prokaryotic cells
Answers
Answer:
Prokaryotic cells don't have a membrane bound organelle
Explanation:
Prokaryotic cells has no nucleus as well as no membrane bound organelle. To remeber this, Pro rhymes with NO. Meaning NO nucleus NO membrane but it do have ribosomes,cytoplasm, and etc.
This is the answer if thats what you are reffering too.
Give two land features that can form because of deflation.
Answers
Explanation:
Deflation can form certain land features. It can pro- duce desert pavement, which is a surface made of peb- bles and small, broken rocks. In some places, the wind can scoop out small, bowl-shaped areas in sediment on the ground. These areas are called deflation hollows.
Answer:
Deflation can form certain land features. It can pro- duce desert pavement, which is a surface made of peb- bles and small, broken rocks. In some places, the wind can scoop out small, bowl-shaped areas in sediment on the ground. These areas are called deflation hollows.
Explanation:
When are fossil fuels harmful to the environment?(No links please!!)
A)when their energy is harnessed by humans
B)when they are first created
C)when they leach into the water from underground
Answers
Explanation:
Option first is the correct one
Answer:
A.when their energy is harnessed by humans
Explanation:
What would happen to the darker colored moths if the forest was light colored?
Answers
Answer:
Dark motgs live longer in a dark forest so they had more time to breed all living things respond to natural selection.
In mice, albinism (b) is recessive to normal brown coloration (B). When an albino female was crossed with a brown male, they produced 2 brown offspring and 2 albino offspring. What is the genotype of the brown male parent?
Answers
Answer:
Bb is his genotype. He passed his dominant allele 50% of the time and his resessive allele 50% of the time.
Question 2: Case 2
A young woman who was adopted at birth, comes into your office asking you to help her identify her birth father. She
already knows that the blood type of her birth mother is A positive. She knows her birth father is one of three men who are
willing to help in her search. Your first step is to do a blood test on the daughter. Your results show that she is type AB
negative. You make some phone calls and have the three possible fathers come in to give a blood sample. Here are the
results:
• Man #1 - O negative
• Man #2 - B negative
• Man #3 - AB positive
From this information, can you conclude who the father is? Is there anyone you can exclude? What tests could you do further
to confirm your analysis about who the father is?
Answers
Answer:
man3
Explanation:
What is the xylem? And what is the function of the xylem for grade 8's? (Please make it simplified)
Answers
can someon please help me understand better DNA and chromosomes etc..???
Answers
Answer:
An organism has the same chromosomes for its entire life. The chromosomes are located within each cell nucleus. They provide the directions for how the cell is supposed to function and determine some characteristics about how the individual looks. Each chromosome contains a very complex molecule called DNA.
Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and instructions for protein synthesis. It is found in most cells of every organism. DNA is a key part of reproduction in which genetic heredity occurs through the passing down of DNA from parent or parents to offspring.
hope I helped!
Select the correct answer.
There was an overuse of fertilizers in William's farm. This led to the destruction of the crops, and William incurred huge losses. Which
management function was neglected in this process?
OA. organizing
OB. staffing
OC. planning
OD directing
O E. controlling
Answers
Answer:
OB. staffing
Un tanque cilindrico de gasolina tiene 3 m de altura y 1.2 m de diámetro. ¿Cuántos kilogramos de gasolina es capaz de almacenar el tanque?
Plan: Para calcular la masa, primero debemos determinar el volumen del cilindro circular
derecho (V = irr2h), donde r = jD = 0.60 m. Por tanto, la masa se determina a partir de
la ecuación (15.1).
Solución: El volumen es
V = 7rr2h = 7t(0.6 m)2(3 m); V = 3.39 m3
Al resolver la ecuación de la densidad para m tenemos
m = pV = (680 kg/m3)(3.39 m3); m = 2310 kg
Otro método para indicar las densidades de las sustancias es la comparación su densidad
con la densidad del agua. La relación de la densidad de la sustancia con respecto a la del agua
se vuelve entonces la gravedad específica, la cual es una cantidad sin dimensiones. Si un
objeto tiene el doble de densidad que el agua, su gravedad específica es 2; un objeto que tiene
una tercera parte de densidad que el agua tiene una densidad relativa de 1/3.
La gravedad específica de una sustancia se define como la razón de su densidad con respecto a la densidad del agua a 4°C (1 000 k g /m 3).
Un mejor nombre para esta cantidad es densidad relativa, pero el término gravedad específica
se usa más ampliamente.
Answers
Answer:
HOLA, como estas?
Explanation:
Answer:
Vol+=+pi%2Ar%5E2%2Ah r = 0,6, h = 3
Masa+=+Vol%2A0,7 kg
Explanation:
How does changing the sequence of nitrogen bases affect the protein that is produced?
Answers
why is the conglomerate rock shown below good evidence that rocks form from other rocks?
Answers
Explanation:
(1) The conglomerate contains some nonsedimentary rock fragments. (2) The conglomerate was formed from material that was buried deep underground. (3) The conglomerate's pebbles are all weathering at the same rate.
The conglomerate rock shown below good evidence that rocks form from other rocks are the conglomerate contains some nonsedimentary rock fragments. The conglomerate was formed from material that was buried deep underground. The conglomerate's pebbles are all weathering at the same rate.
What is igneous rock?Igneous rocks are formed when molten rocks are cools to a solid state. Lava is a molten rock (magma) which are flowing out by volcanoes. As igneous rock are formed from molten rock ( magma ) and by this process rock cycle are starting. So igneous rock are also called as primary rocks.
Igneous rock are formed when molten rock are cools and crystallizes, in volcanoes at surface of the earth or inside the crust. All molten rock ( magma ) are formed in the lower crust or upper mantle, because of the high temperature are there. All these are process are responsible for formation of igneous rocks.
Larger igneous rock indicates that the cooling rate of molten rock (magma) are slowly. While smaller igneous rock indicates that the cooling rate of molten rock (magma) are faster.
Therefore, The conglomerate rock shown below good evidence that rocks form from other rocks are the conglomerate contains some nonsedimentary rock fragments. The conglomerate was formed from material that was buried deep underground. The conglomerate's pebbles are all weathering at the same rate.
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Una carga de 50 N unida a un resorte que cuelga verticalmente estira el resorte 5cm. El resorte se coloca ahora horizontalmente sobre una masa y se estira 11cm.
Answers
Answer:
-110 N
Explanation:
Una carga de 50 N unida a un resorte que cuelga verticalmente estira el resorte 5cm. El resorte se coloca ahora horizontalmente sobre una masa y se estira 11cm. ¿Qué fuerza se requiere para estirar ese resorte en esa cantidad?
Solution:
La constante de resorte (k) es la relación entre la fuerza (F) y la extensión (d) como resultado de la fuerza aplicada, por lo tanto:
k = F / d
Dado que F = 50 N, d = 5 cm = 0.05 m. Por eso:
k = F / d = 50 N / 0.05 = 1000 N / m
La fuerza (F) requerida para provocar un estiramiento de 11 cm se da como:
F = -kx
x = 11 cm = 0,11 m. Por eso:
F = -kx = -1000 * 0,11 = -110 N
El signo negativo significa que el objeto se tira hacia el resorte.
Why is the genetic code common to all organisms!
Answers
Answer:
Why Is DNA Considered a Universal Genetic Code? DNA is considered a universal genetic code because every known living organism has genes made of DNA. ... All organisms also use DNA to transcribe RNA, and then they translate that RNA into proteins. Every living organism uses that same system.
Explanation:
The genetic code is universal because it is the same among all organisms. Replication is the process of copying a molecule of DNA. Transcription is the process of converting a specific sequence of DNA into RNA.
Protein-encoding genes specify the sequences of amino acids, which are the building blocks of proteins. In turn, proteins are responsible for orchestrating nearly every function of the cell. Both protein-encoding genes and the proteins that are their gene products are absolutely essential to life as we know it.
10. DNA can best be compared to
O the bricks that make up a building.
O an instruction manual.
the people that live in a building.
O the different apartments and offices in a building.
Answers
Answer:
An instruction manual because DNA is what determines everything about you
DNA can best be compared to an instruction manual. Thus, the correct option for this question is B.
What is DNA?DNA stands for Deoxyribonucleic acid. It may be characterized as a type of molecule that is generally present inside cells and contains the genetic information which is ultimately responsible for the development and function of an organism.
The molecules of DNA allow this information to be passed from one generation to the next. According to the question, as DNA represents each and every piece of information about an organism, similarly an instruction manual describe all the processes and function of any object or thing.
Therefore, DNA can best be compared to an instruction manual. Thus, the correct option for this question is B.
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A body system is a group of organs that work together to keep the organism alive. How does the nervous system help to keep an organism alive?
Answers
Alina notices that when she shines a desk lamp on a mirror, nothing happens.When she shines an infrared lamp on the mirror, the mirror starts to get warmer.Why does light from the infrared lamp warm the mirror when light from the desk lamp does not?
Answers
Answer:
Because the infrared lamp gives off a type of light that the desk lamp does not, and the mirror can only take in the energy from the infrared light.
Explanation:
Answer:
Explanation:
Infrared is used for incubators when a chicken egg is about to hatch. It is the electrical frequency of electromagnetic radiation the provides heat.
Because heat is produced electrically it can be controlled with something resembling a dimmer switch (the kind of switch that dims lights in romantic restaurants). That means that the temperature can be set to the hen's body temperature.
Infrared is just below visible light.
Which statement is true about human population today?
A) Population is declining for the first time in history.
B) Population is rapidly declining in urban areas.
C) The time required to double the population is going down.
D) Human population is now about 5 billion.
Answers
Answer:
The time required to double the population is going down.
Explanation:
2022 Accelerate (option D)
According to the human population today, the time required to double the population is going down.
What do you mean by human population?"Population is the whole number of inhabitants occupying an area and continually being modified by increases (births and immigrations) and losses (deaths and emigrations)." As of now, the rate of birth and immigration is higher than that of death and emigration, due to which population is increasing rapidly.The current human population estimated to have exceeded 7.9 billion.Hence, the correct option is C. The time required to double the population is going down.
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describe the following Characteristics of Life display organization growth development requires energy reproduction respond to stimuli and maintains homeostasis
Answers
Answer:
These characteristics of Life are very important.
Explanation:
Organization growth, development requires energy, reproduction respond to stimuli and maintains homeostasis are the characteristics of Life. These characteristics are very important for survival and for a good life. In the absence of these characteristics, the organisms will die. Energy is required for the growth and development of an organisms. Equilibrium is maintained in the body of organism by maintaining homeostasis in the body which resist change in the body.
1. What is a limiting factor in relation to an ecosystem
2. What does carrying capacity men for a population?
Answers
Answer:
1 A limiting factor is anything that constrains a population's size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources. ... Limiting factors are usually expressed as a lack of a particular resource.
2 Carrying capacity can be defined as a species' average population size in a particular habitat. ... If these needs are not met, the population will decrease until the resource rebounds. Explore carrying capacity with these curated classroom resources.
Hope this is fine for youWhich scenario describes the damage caused by a tornado?
Answers
Answer:
destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees. Damage paths can be in excess of one mile wide to 50 miles long.
Explanation:
what connects the kidneys to the bladder