Explanation:
5x + 4y = 58 ....1
3x + 7y = 67 ....2
....1 × 3 both sides of the equation
15x + 12y = 174 ....3
....2 × 5 both sides of the equation
15x + 35y = 335 ....4
.....4 - ......3 both sides of the equation
35y - 12y = 335 - 174
23y = 161
y = 161/23
= 7
1.Water covers 70 percent of the earth's surface and supports life on the Earth. Explain the statement 2.Why do we need to manage our resources? { i need the answer before 4 pm please help!}
Explanation:
Water is extremely valuable to all living things. It is especially important for plants to perform photosynthesis which is one of the smallest most valuable biochemical mechanisms known to life, in addition, plants are the main source of nutrients for many creatures. Without photosynthesis, plants would not be able to produce oxygen. In addition, plants are classified as producers, the most basic level of the flow of energy in every ecosystem and are the main reason energy from the sun can then be converted into usable energy for primary consumers, secondary consumers, and tertiary consumers. For humans, water is extremely important to keeping our bodies in homeostasis while the billions of chemical reactions take place in our bodies in just minutes. A human can not live without water for more than three to four days. If there was a deficiency of water both plants, animals, and humans would be greatly affected. Without water, plants would not grow, so no conversion CO2 to 02 and harnessing energy from the sun. Next animals that depend on both water and plants would have a decrease in population. Followed by the depletion of all else consumers. You remove a resource this valuable and there is no coming back.
Explain whether the top or bottom layers would be the oldest layer of sedimentary rock.
explain your answer.
Answer:
Because sedimentary rock forms in layers, the oldest layer of undisturbed sedimentary rock will be on the bottom and the youngest on top. If the rock layers are bent, they may no longer be in order from oldest to youngest.
The bottom layer would be the oldest layer of sedimentary rock as sediments deposited earlier will be present at the bottom.
What are sedimentary rocks?They are the types of rocks which are formed as a result of accumulation of minerals or organic particles at the surface of the earth.Sedimentation is the name given to a collective process which cause the particles to settle.
The study of sedimentary rocks is useful in civil engineering and as important sources of coal, fossil fuels and ores.The color of sedimentary rock is often determined by iron content and sometimes due to the presence of organic matter.
They are classified based on origin in to 4 types which are clastic, biochemical ,chemical and other sedimentary rocks.While based on composition they are classified as siliciclastic,carbonate ,evaporite,organic rich,siliceous ,iron-rich and phosphatic sedimentary rocks.
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Would the following be classified as a carbohydrate, lipid, protein, or nucleic acid?
Carbohydrate
Lipid
Protein
Nucleic Acid
Answer:
nucleic acid and it must not be the others
What conditions are needed to make a seed germinate?
please answee it
and thank you
Answer:
Air, water, and warmth
Explanation:
pls mark me brainlesssss
1. The______ provides support and rigidity to cells allowing plants to stand upright.
plz help I need an answer
sclerenchyma
Explanation:
sclerenchyma is a suppprting tissue that gives the plants rigidity and support to make it stand upright. It is made up of scleroids and fibre.
Scleroids are small stonelike materials that are arranged in a way that helps the plants withstand force.
For example when rain falls and the wind's current is strong, it sways the plant from left to right but because of sclerenchyma, the plant can withstand the current and return to its normal position. But if the winds current or force is stroonger than that of the sclenchyma, the plant bends or breaks
Which carbon is recycled though living organisms the atmosphere and other parts of the biosphere
Answer:
carbon monoxide
Explanation:
living organisms, the atmosphere and other parts of the biosphere recycle carbon monoxide.
hope that helps :)
Answer:
Organic carbon
Explanation:
A major component of all living organisms on earth
A__ is a prediction of an outcome and the basis for experimentation
Select one
a conclusion
b. constant
O c hypothesis
INTL
SOS
(
ASAP 50 POINTS
Osteoporosis is a disease that can cause bone weakening in women due to calcium loss. One group of patients will be taking the regular calcium pill used for treating osteoporosis. Another group of patients will be taking a new calcium pill used for treating osteoporosis. Calcium levels obtained by taking the new pill will be tested over a six month period and the women’s resulting bone mass will be compared between the two groups at the end of six months of treatment.
What is the Independent variable?
Answer:
The Independent variable would be the pills that are being taken.
Explanation:
The Independent variable is the variable that you control because the Dependent variables depend on what the Independent variable is.
Which of the following is not a character of life?
Group of answer choices
pass on genetic material
blood flow
breath
Growth
maintain homeostasis
metabolize
use energy
Development
think
Made up of Cells
respond
reproduce
evolve
Answer:
blood flow and breathe i think
Explanation:
they wouldnt apply to plants, they are living just like animals
The white feathers of a snowy owl allow it to blend in with its environment during the winter months (snow). This is an example of?
Environmental Change
Genetic Variation
Adaptation
Species
Answer:
Adaptation
Explanation:
Answer:
I think Adaptation, or Environmental change
Explanation:
This is because the snowy owl lives in an environment that is snowy, it needed to adapt to survive.
I hope this helps.
Good Luck
Which is the following is true about saturated fats?
a. They are typically solids at room temperature.
b. They are generally the healthiest fats to consume.
c. They cannot be broken down by enzymes.
d. By definition, they always contain one or more double bonds.
The following is true about saturated fats: they are typically solids at room temperature, which is in Option A, as they have a high melting point due to the absence of double bonds in their fatty acid chain.
What are saturated fats?Saturated fats are a type of fat molecule that consists of long chains of fatty acids. These fatty acids are called "saturated" because they are fully "saturated" with hydrogen atoms, that is, there are no double bonds between the carbon atoms in the fatty acid chain. This results in a straight, rigid structure that allows these fats to pack tightly together, which is why they are usually solid at room temperature.
Hence, the following is true about saturated fats: they are typically solid at room temperature, which is in Option A.
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Some students want to test different soils to find out which ones absorb heat the fastest. For the first test, they put 500 grams of sand in a beaker and put a thermometer in the sand. Which aspect of this experiment should be kept the same in all the other tests? Some students want to test different soils to find out which ones absorb heat the fastest. For the first test, they put 500 grams of sand in a beaker and put a thermometer in the sand. Which aspect of this experiment should be kept the same in all the other tests?
Answer:
Weight of the soil (500g)
Explanation:
According to this question, some students are conducting an experiment in order to find out which of the different soils used absorb heat the fastest. For the first test, they put 500 grams of SAND in a beaker and put a thermometer in the sand.
In an experiment, the variables that must be kept constant for all the groups is called the CONSTANT OR CONTROLLED VARIABLE. This is done in order not to influence the outcome of the experiment. In this case, the weight (500g) of the soil should be kept the same for all other tests.
This means that for the remaining soil being tested, 500g of each type of soil should be used.
Which of the following are examples of plant tissue?
• epithelial
• connective
• ground
• vascular
A meter stick or meter tape is used to measure the length, width, or height of an object. A meter stick is most often divided and labeled with numbers representing what unit?
A) centimeters.
B) meters.
C) milliliters.
D) millimeters.
Answer:
a centimeters
Explanation:
I think this is right. has both centimeters and millimeters but centimeters are labeled
Answer:
A) centimeters.
Explanation:
Explain and describe complex inheritance.
Answer:
Complex Inheritance: (inherited) traits that have a genetic component that does not follow strict Mendelian inheritance. May involve the interaction of two or more genes or gene-environment interactions. ( HGPIA)
Explanation:
Which of the following is a TRUE statement about the differences between prokaryotic
and eukaryotic cells?
a. Eukaryotic cells contain a plasma membrane and cytoplasm, but prokaryotic cells
do not
b. Prokaryotic cells contain a nucleus and eukaryotic cells do not
C. Prokaryotic cells lack organelles, but eukaryotic cells possess organelles
d. All of the above are true
Answer:
B
Explanation:
The statement that gives the differences between prokaryotic and eukaryotic cells as regards this question is B: Prokaryotic cells contain a nucleus and eukaryotic cells do not.
Eukaryotic cells can be regarded as a cell that posses membrane-bound nucleus, while prokaryotic cell can be regarded as cells that doesn't posses a membrane-bound nucleus.Examples of organisms that can regarded as a eukaryotic are ; protists, fungi and plants, while that of prokaryotic cells are; bacteria and cyanobacteria archaea.Therefore, option B is correct.
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Is Electrical Conductivity Physical or Chemical Property of cut and paste?
Answer:
Conductivity is a physical property because the identity of the substance does not change.
Hope that helps♡
If the DNA sequence was a AGC what would the mRNA sequence be?
Answer:
DNA utilizes four bases, adenine (A), guanine (G), cytosine (C), and thymine (T), in its code. RNA also uses four bases. However, instead of using 'T' as DNA does, it uses uracil (U). Therefore, if your DNA sequence is 3' T C G T T C A G T 5', the mRNA sequence would be 5' A G C A A G U C A 3'.
Explanation:
Prokaryotes and eukaryotes are similar in all of these aspects except.
eukaryotes have nuclei
When a parent is genetically unchanged
A) Heredity
B) Hybrid
C) Purebred
D)Cross
Help !!!!!!!!!!!!!!!!!!!!!
Answer: I would say D or the last answer
Explanation:
What is the blending theory of inheritance? Why did Mendel question this theory?
Answer:
Blending Theory of Inheritance
Mendel noticed plants in his own garden that weren't a blend of the parents. For example, a tall plant and a short plant had offspring that were either tall or short but not medium in height. Observations such as these led Mendel to question the blending theory
The blending theory state that the inheritance of traits from two parents produces offspring with characteristics that are combination of the parents.
What is blending theory of inheritance?Blending theory of inheritance stated that, offspring is combination of characteristics of the traits from two parents. Blending inheritance was discarded after the general acceptance of the modern genetics.
Mendel noticed that plant in his garden were not blend of the parents. For example, a tall plant and a short plant had offspring that were either tall or short but not medium in height.
Therefore, Mendel question this theory. He wanted to know if there was different principle that could explain how the characteristics are inherited to the offspring from parents.
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a drawing or diagram is an example of a(n) ____ model.
State three factors affecting breathing rate in human beings
Answer: age, smoking habits, and size/weight
Explanation:
The older you get, the weaker you'll be, so your breathing will be effected.
If you smoke then your lungs will be effected which will ultimately have an affect your breathing.
If you're really heavy (ex. Over weight) then you will get tired more easily, which will effect your breathing rate.
(Need help) If you Were a Scienctist,describe the information about parts of the universe that could be collected using electromagnetic waves
electric bells .... maybe I am not sure
Oceans formed when rainwater filled basins 3.8 billion years ago. ________ run into the ocean dissolving minerals like salt as they go. __________ leaves salt in the ocean, which is why the ocean is _________. Salinity has _______________, so the ocean is _______getting any more or less salty. Salinity makes water ____________ and contributes to currents.
Answer:
Physically erodes
Minerals
Dissolved
Crystals
Thicker
Minerals
Oceans formed when rainwater filled basins 3.8 billion years ago. Physical erosion runs into the ocean dissolving minerals like salt as they go. Minerals leave salt in the ocean, which is why the ocean is dissolved.
Salinity has crystals, so the ocean is thicker and getting more or less salty. Salinity makes water full of minerals and contributes to currents.
How oceans are formed?The oceans formed billions of years ago due to the condensation of water into rain which significantly filled the basins that ultimately direct the formation of the oceans. Apart from this, the continuous degassing of the interior surface of the earth is also responsible for this fact.
According to the context of this question, the salinity of the oceans depends on the number of minerals dissolved in it which contributes to the development of currents.
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explain how the energy producing processes occurring in the cells of organisms drives the cycling of matter within an ecosystem
Answer:
The flow of energy and cycling of matter can be traced. The chemical reaction by which plants produce complex food molecules (sugars) requires an energy input (i.e., from sunlight) to occur. In this reaction, carbon dioxide and water combine to form carbon based organic molecules and release oxygen
You are given a substance that contains salt, water, and black pepper. a. How would you classify the substance? Justify your answer with evidence. b. How would you classify salt, water, and black pepper individually? Why?
Answer: a. solution.
Explanation:
A solution is a substance which consists of two or more substances. The solute and solvent are the components of the solution. The solute dissolves in a solvent.
a. When salt, water, and black pepper mix together they form a solution. The salt and black pepper are solute and the water is the solvent.
b. salt is a solid. It has a crystalline structure.
water is a liquid
black pepper is again solid
These components will mix together to form a solution.
All of the following are found in the DNA molecule excep
O Carbon dioxide
O deoxyribose
O phosphate
O nitrogen
Which organelle would be more developed in a cell of salivary glands?
Answer:
Lysosomes
Explanation:
Salivary glands are secretory cells, meaning they release substances into the extracellular environment. In the case of the salivary glands, they secrete water, electrolytes, mucus and enzymes, the components of saliva. Therefore, these cells have a very well-developed secretory system.
Lysosomes store secretory proteins and are important for keeping them sequestered from the rest of the cell, and eventually delivering them outside the cell.
