Answer:
Independent variable - time. Dependent variable - the distance moved by the bubble along the capillary tube. Control variables - temperature, air flow or draughts, adequate supply of water.
Why is water considered a renewable natural resource?
because only surface water can be used for human purposes
because the amount of freshwater is unlimited and should be used freely
because water is continuously cycled from land to the atmosphere and back
because once we use up a source of freshwater it is gone forever
Answer:
Water is continuously cycled from land to the atmosphere and back.
Explanation:
Water is considered a renewable natural resource because of the water cycle. Water from streams, rivers, oceans, seas, ponds, and etc undergoes evaporation from land to the atmosphere. It later passes through the process of condensation; and come back in the form of precipitation.
How is renewable fuel use expected to change in the next decade? a. it is expected to decrease. b. it is expected to increase. c. it is expected to fluctuate. d. it is expected to remain the same.
The use of renewable fuel is expected to to increase in the next decade. That is option B.
What is renewable fuel?A renewable fuel is the type of fuel that is produced from the renewable biomass sources through series of thermal and biological processes.
One of the benefits of renewable fuel is that it generates energy that produces no greenhouse gas emissions from fossil fuels.
Therefore, since renewable fuel produces no for of air pollution, it's use is expected to increase in the next decade.
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Answer:
B
Explanation:
Ed 2022
Compare between red blood cells and white blood cells in 2 points.
Answer & Explanation:
Red blood cells carry oxygen to other parts of the body and waste from the body to the lungs to get rid of it. White blood cells attack harmful particles in the body.
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Slove this easy question out.. Fill the blank out
The malfunction of ribosomes in the body will cause a disease called Ribosomopathies. What is the likely effect of this disease?
A) Ribosomes will perform a less important function and the disease will not affect the body.
B) Proteins will not be properly formed, resulting in significant malfunction of the body.
C) Other subcellular structures will take over the function of the ribosomes, maintaining the health of the body.
D) The body will use molecules other than proteins to carry out the work of the cell, so the body will be minimally affected.
Answer:
Not sure of answer though
Explanation:
But here is what have got
Clinical features of the ribosomopathies can include bone marrow failure, developmental abnormalities, and increased risk of cancer.
Hope it helped
Answer:B, Proteins will not be properly formed, resulting in significant malfunction of the body.
Explanation:
The muscle walls are thicker on the left side of the heart in order to supply enough pressure to pump the blood throughout the body. true or false
Answer:
Left
Explanation:
The left ventricle of your heart is larger and thicker than the right ventricle. This is because it has to pump the blood further around the body, and against higher pressure, compared with the right ventricle.
Glycine (C2H5NO2) is added to a growing peptide chain containing methionine (C5H11NO2S) and alanine (C3H7NO2). Which of the following peptide chain orientations best displays the growing chain and peptide bond between the amino acids?
Answer:
First Image
Explanation:
Amino acid order is NCC (Nitrogen, alpha carbon with R group attached, and carboxy group).
If we start with methionine, then we write its nitrogen, then alpha carbon and then carboxy and then alanine's nitronge, alpha, carboxy, and end with glycine nitrogen, alpha and carboxy.
I have labelled the "R" groups to show amino acids. First is methionine, then alanine and then glycine.
A student is creating a poster to share out with the class describing the chemical and physical properties and changes for aluminum, a metal they have been researching during the unit on the poster, the student is creating a graphic organizer showing the chemical changes for aluminum on one side with the physical changes on the other side. Which options should the student put under the "physical changes" portion of the poster about aluminum? Select ALL that apply.
The student put under the "physical changes" portion of the poster about aluminum is option "B".
What is the boiling point and melting point of aluminum?The melting point of aluminum is 933.47 Kelvin, 660.32 degrees Celsius, or 1220.58 degrees Fahrenheit.
It's normal boiling point is 2792 Kelvin, 2579 degrees Celsius, or 4566 degrees Fahrenheit.
Thus, Options "B" aluminum met at 660 degree celcius.
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When co2 levels in the blood increase how does the nervous system react
okay to answer your question changes and sympathetic tone have a limited effect on cerebral blood flow at normal paco2 levels however the sympathetic nervous system seems to attenuate the CO2 induced increase in cerebral blood flow this phenomenon May indicate a moderate direct effect of the sympathetic nervous system on the cerebral vascular tour for the more sympathetic activation tends to increase ventilation and dust can indirectly increase cerebral vascular tone. I don't take biology but I'm just saying what i know.
hope this helps
Phagocytes are white blood cells that find foreign pathogens and ________.
What happens after
transcription?
A. The DNA strand breaks apart.
B. The DNA strand dissolves.
C. The DNA strand rejoins.
D. The DNA strand unwinds completely.
What is the most direct evidence in this photo of millions of years of
deposition?
a. the smooth, clear rock layers
b. rock that is red in some places
c. the mountains in the background
d. the water at the bottom of the canyon
Answer:
Where is the photo?
Explanation:
what happens during meiosis I and meiosis II?
Answer: In meiosis I, homologous chromosomes partitioned, whereas in meiosis II, sister chromatids isolated. Meiosis II produces 4 haploid girl cells, though Meiosis I produces 2 diploid girl cells. Hereditary recombination (crossing over) as it were happens in meiosis I.
Explanation:
What two products are stored in a plant's sink?
what is a difference between reflex action and voluntary action??
Don't spam┐( ˘_˘)┌
Answer:
Voluntary actions involve conscious thought and thinking time. Reflex actions do not involve conscious thought (thinking time) and happen very quickly to avoid unnecessary damage to the body.
Explanation:
Explanation:
Voluntary action are under control of ones will, whereas reflex action are spontaneous involuntary, nerve-mediated activity produced at the unconscious level by stimulating specific receptors.
Which of the following is a major reason that many people are against damming up rivers for human use? A) dams create floods B) dams are not aesthetically pleasing to the community C) dams affect the aquatic organisms and surrounding ecosystem D) dams prevent the use of water for hydroelectric power
Answer:
i feel as if the answer would be C or D
Explanation:
Because the first two isnt really that abd but dams ruin the water and people want that to themselves if that makes sense
A major reason that many people are against damming up rivers for human use is because dams affect the aquatic organisms and surrounding ecosystem. T Option C. his is further explained below.
What is a Dam?A Dam built to hold back and elevate the level of water, producing a reservoir used to produce energy or as a water source.
In conclusion, Many individuals are opposed to damming rivers for human use because dams harm aquatic species and the surrounding ecology.
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Most marine invertebrates are osmoconformers. This means that:.
Which stage has both high birth rates and high death rates but low overall population growth in part from high incidences of disease and famine?.
Stage 1 which is the high fluctuating stage has both high birth rates and high death rates.
What is Famine?This is a condition which is characterized by lack of food as a result of some factors such as war, natural disaster etc.
In the stage 1, the population growth is slow and fluctuating as a result of high incidences of disease and famine.
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Why is innate host resistance a type of nonspecific immune response?.
These defenses are described as nonspecific because they do not target any specific pathogen; rather, they defend against a wide range of potential pathogens.
Is innate immunity nonspecific resistance?
The innate immune system provides this kind of nonspecific protection through a number of defense mechanisms, which include physical barriers such as the skin, chemical barriers such as antimicrobial proteins that harm or destroy invaders, and cells that attack foreign cells and body cells harbouring infectious agents.
Thus, they do not target any specific pathogen; rather, they defend against a wide range of potential pathogens.
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Since fossil fuels can only be burned once, they are considered what type of energy source?
nonrenewable
Which of the following may cause a fault? select all that apply.
pulling forces
folding land
earthquakes
pushing forces
Answer:
folding land and earthquake may cause of fault
In the electrolysis of aqueous nabr, which substance is first produced at the anode?
NaBr is a soluble salt. When you dissolve the solid in water it will first separate the íons: Na+ interact and is surrounded by about 6 water molecules, and could be now represented by [Na.6H2O]+, still a positive íon; the Br- will also separate from the Na+ and interact with water molecules (typically 4–6), forming the [Br.nH2O]-, a negative íon.
What is produced at the anode in aqueous electrolysis?Oxygen is produced (from hydroxide ions), unless halide ions (chloride, bromide or iodide ions) are present.
In that case, the negatively charged halide ions lose electrons and form the corresponding halogen.
Thus, this the answer.
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what is the definition of soil in your own words
Answer:
The thin layer of material that covers the earth surface that is formed from the wet o rock this layer mixture posses organic matter,inorganic matter, gas liquids and living organisms and provide structural balance to agriculture
Explanation:Been using this definition from grade 7 I hope it helps
some challenges people face in transportation
Damage to which spinal nerve(s) might produce the inability to breathe?
Damage to the phrenic nerve might produce the inability to breathe.
What do you mean by Nerves?Nerves may be defined as a pile of axons outside the central nervous system, surrounded by a sheath of connective tissue to form a cordlike structure.
The phrenic nerves are responsible for the movement of the diaphragm during the process of breathing. This movement of the diaphragm plays a crucial role in the inhalation and exhalation of air.
Therefore, damage to the phrenic nerve might produce the inability to breathe.
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What is the 4th trophic level called?
Answer:
Tertiary Consumers.
Explanation:
Which is NOT excreted by your skin?
A. heat
B. urine
C. sweat
D. salt
The skin does not excrete urine
It does excrete some heat when the body becomes to hot. It excretes sweat to cool off the body when the body is hot. Salt is excreted with sweat.
Hope that helps!
Which of these is true about the size of the Sun?
A.
The Sun is about the same size as Earth.
B.
The Sun is about the same size as Jupiter.
C.
The Sun is much smaller than Jupiter.
D.
The Sun is much larger than Earth.
Answer:
D
Explanation:
because 1.3 million earths could fit in the sun
Answer:
D
Explanation:
the sun is much larger than earth.
PLEASE HELP ASAP!!!!!!
Why do animals have special strategies to attract and select a mate?
Answer:
Animals use specific strategies to attract males/females in their species because for the mating process to happen, the animals must be attracted to one another so that they can continue with the certain circle of life.
Explanation:
what parts of the food web are affected when an orangutan become endangered?
Answer:
On average, 2,000 to 3,000 orangutans are killed every year. While exact orangutan population counts are always a challenge – estimates put current counts between 50,000-65,000 orangutans left in the wild.
At this rate of loss, many experts believe orangutans could be extinct in the wild in less than 50 years.
Never before has their very existence been threatened so severely. Economic crisis combined with natural disasters and human abuse of the forest are pushing one of humankind’s closest cousins to extinction.
The main threats in today to the survival of orangutans
Loss of habitat through deforestation
Palm oil plantations
Illegal hunting
Illegal pet trade
Explanation: