Answer:
oxygen
Explanation:
oxygen is an essential nutrient which the body needs especially during respiration.
it help the blood cells do provide energy.
without oxygen, there is no gaseous exchange
Answer:
Because it's the only gas that can support life and without it o no human or animal can survive
6.
What are two characteristics of each of Earth’s four major systems?
Answer:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air)
Which of the following statements about a controlled experiment is accurate? a. All the variables must be kept the same. b. Only one variable is tested at a time. c. Everything can be studied by setting up a controlled experiment. d. Controlled experiments cannot be performed on living things
Answer:
B.
Explanation:
Only one variable is altered at a time in a "controlled experiment." The rest of the variables should be kept the same or “controlled.”
Which of the following represents the impacts of drilling and fracking on human health?
I. Heavy metal exposure can cause nervous system damage.
II. Air pollution can aggravate respiratory conditions.
III. Noise pollution can cause headaches, changes in sleep patterns, and anxiety.
- III only
- I and II
- II and III
- I, II, and III
Answer:
II and III
Explanation:
I only applies to mining and not drilling.
The correct answer as to the impacts of drilling and fracking on human health includes nervous system damage as a result of heavy metal exposure, respiratory diseases as a result of air pollution, and headaches, changes to sleep patterns, etc. as a result of noise pollution. The correct answer would therefore be I, II, and III.
Drilling and fracking are innovative technology methods used in the location of water, minerals, and the extraction of crude oil from underground respectively. The methods are characterized by the noise of the drilling machine, air pollution by dust particles as a result of soil excavation, and heavy metal pollution of the environment.The different pollutions have varying degrees of effects on the health of human and these include damages to the nervous system by heavy metal, damages to the respiratory organs as a result of inhalation of particulate matters and headaches/anxiety as a result of noise pollution.Hence, all the three effects represent the impact of drilling and fracking on human health.
More on pollutions and their effects can be found here: https://brainly.com/question/22242558
what is biomolecules ?how it works in our daily life
Answer:
all
Explanation:
jeksksusisjhdisiskshdhdi
Answer:
Biomolecule, also called biological molecule, any of numerous substances that are produced by cells and living organisms.
Explanation:
The biomolecules may involve in several processes such as energy storage (carbohydrates), catalyzing the biochemical reactions (hormones), storing/transmitting the genetic codes (RNA/DNA), or altering biological and neurological activities (neurotransmitter/hormones.
(hope this helps)
Open-pit mining creates a large hole in the ground after minerals are removed from the surface. Which statement best describes an environmental consequence of this process?
- Heavy metals are released into surrounding soil, poisoning local vegetation.
- High salinity of wastewater reduces soil fertility and growth of vegetation.
- Billions of gallons of water are pulled from surrounding ecosystems.
- Wastewater is contaminated with oil and becomes sludge in landfills.
The answer is Heavy Metals are released
Answer:
Heavy metals are released into surrounding soil, poisoning local vegetation.
Explanation:
All the other options are not environmental impacts.
blood
11. Where does enzymatic hydrolysis of food happen in the body?
A. Mouth
B. Stomach
B. Large intestine
C. Small intestine
Answer:
hi
Mark as brainliest
Explanation:
in
the
stomach
True/False: Mutations that inactivate genes that promote apoptosis often lead to increased risk of developing cancer. g
Answer:
An important difference between oncogenes and tumor suppressor genes is that oncogenes result from the activation (turning on) of proto-oncogenes, but tumor suppressor genes cause cancer when they are inactivated (turned off).
Its true g
Explanation:
i actually dont know
Patterns in date can serve as what to support a claim?
Answer:
cloud pattern designer
What is the significance of directionality of the monomers in a polymer
Answer:
When you put the monomers together in a certain sequence/order they have different structures and functions.
Explanation:
A person lives on the Tropic of Capricorn. What is the altitude of Polaris?
O 23 1/2"
O 90°
O 66° 33"
O 15°
O 30°
O 45°
The correct answer as to what the altitude of Polaris would be for a person that lives on the Tropic of Capricon is 23° 1/2".
Polaris is a star and the altitude of any star is its height above the horizonThe Polaris is otherwise known as the North star as an indication that it is directly located overhead the north pole. Thus, it may not be visible once one moves South of the equator. The tropic of Capricon is located approximately 23° 1/2" South of the equator. In other words, the latitude of the Tropic of cancer is approximately 23° 1/2".Hence, the altitude of the Polaris at an altitude of 23° 1/2" will also be 23° 1/2", although it will most likely remain invisible.A person that lives on the Tropic of Capricon is approximately on latitude 23° 1/2". Since the altitude of a star is its height above the horizon, the altitude of Polaris from the Tropic of Capricon would, therefore, be 23° 1/2"
More about the Polaris can be found here: https://brainly.com/question/13606020
Question and hypothesis worksheets
search Question and hypothesis worksheets
and go to images
8. What part of the heart is described as having thin walls that store blood returning to the
heart?……
A. Upper chambers
B. Lower chambers
C. Ventricles
D. None of the above
Answer:
none of the above is answer
Being able to maintain a stable internal
environment is described as what?
A homeostasis
B. metabolism
C. reproducing
D. stimuli
Answer:
A. homeostasis
Explanation:
Homeostasis refers to the body's ability to maintain a stable internal environment like body temperature etc.
hope i helped (:
please help
Where does sound waves passes through
pls help me solve this! (20 pts)
Answer: asuume
Explanation: i would asuume 2
Nitrogen-fixing bacteria are prokaryotic organisms that transform nitrogen gas into nitrogen compounds like ammonia and nitrates.
The graph that correctly shows the nitrogen-fixing bacteria in the soil is graph 2.
Nitrogen-fixing bacteria can be explained as:
Nitrogen-fixing bacteria are the organisms that fix the atmospheric nitrogen into the compounds of nitrogen as ammonia and nitrates.The conversion of the atmospheric nitrogen is done in two steps, the first step involves the conversion of atmospheric nitrogen to ammonia. The second step involves the conversion of ammonium to usable nitrate. Graph 2 represents the amount of atmospheric nitrogen decreasing with an increase in the amount of ammonia. It indicates that atmospheric nitrogen is utilized and converted into nitrogen compounds.
Thus, the correct answer is graph 2.
To know more about nitrogen-fixing bacteria, refer to the following link:
https://brainly.com/question/7049583
Discuss how Knowing about Allied health professionals
Explanation:
enjkeejeklejeldeldwjpeejeer
what is unique about the way a binary geothermal power plant works
create a food chain for an ocean ecosystem.identify each organism’s role. Include producer Estuary organisms: algae, sea lion, zooplankton, squid, salmon
Answer: Algae, Zooplankton, Salmon, Sea Lion, and then Squid (or might be sea lion and then squid)
Explanation:
Algae is the producer.
In order to learn more about a rare disease, a doctor uses a computer to talk to another doctor halfway around the world. This technology trend in medicine is known as
Answer:
Telemedicine
Explanation:
I could be wrong, but I do not think I am.
Due to the partial charges on atoms in a water molecule, ____ in water molecules are attracted to oxygen atoms in other water molecules.
Hydrogen bond in water molecules are attracted to oxygen atoms in other water molecules.
A hydrogen bond is a strong dipole-dipole attraction which occurs between:
the hydrogen atom attached to a strongly electronegative atom (for example oxygen in water molecules)another strongly electronegative atom with a lone pair of electronsHydrogen bonding occurs in the following compounds which include water, hydrogen fluoride and ammonia.
When an electronegative atom such as oxygen is bonded to hydrogen, a dipole develops causing the hydrogen to be partially positive while the other atom is partially negative.
Thus, this accounts for high boiling point in compounds that contains hydrogen bonds.
Learn more here:
https://brainly.com/question/14209071
The _ of each element have a characteristic number of _ arranged in _. The number of _ determines what types of bonds or ions the atoms may form, so the chemical reactivity of an atom arises from its _. The properties of compounds emerge from the arrangement of their constituent atoms and of the bonds between them. Thus, a wide variety of _ with very different chemical properties can be made from the same _. Each molecule has a distinctive size, shape, and _, which determine its highly specific ability to _. Compounds in chemical wastes may contaminate the environment if their atoms are combined in new arrangements that _.
Word bank:
atoms
Molecules
Harm living organisms
Valence electrons
Charge distribution
Electron distribution
Interact with other molecules electron shells
Electrons
Basic atoms
The words that fill in the blanks in order are;
atomsElectronsshellsValence electronsElectron distributionMoleculesBasic atoms Charge distributionInteract with other molecules electronHarm living organismsAtoms are composed of electrons. These electrons are arranged in shells. The number of valence electrons (outermost shell electrons) determine the kind of bonds that can be formed in a molecule.
In a molecule, charges are distributed in a unique way and the charge distribution in a molecule determines how the molecule interacts with other molecules. Different molecules can be made by arranging the same basic atoms in different ways.
Harmful substances can be formed when atoms of elements combine in new ways in the environment.
Learn more; https://brainly.com/question/14156701
Therefore, how many °F are there in one °C?
What two test that might indicate kidney failure
Answer: Please refer to:
ACR (Albumin to Creatinine Ratio) and GFR (glomerular filtration rate).
GFR is a measure of kidney function and is performed through a blood test. Your GFR will determine what stage of kidney disease you have – there are 5 stages
Explanation:
Not sure but hope it helps.
3) What is the density of a rock with a volume of 4 cm3 (cubed) and a mass of 12 grams?
A) 1 g/cm3 (gram per cubic cm)
B) 2 g/cm3
C) 3 g/cm3
D) 4 g/cm3
E) 5 g/cm3
Answer:
C) 3 g/cm3
Explanation:
Density=mass/volume
D=12/4
Cancel out with the common factor 4
D=3 g/cm3
Therefore density is 3 g/cm3
Please select the correct answers
Answer:
c is the answer
Explanation:
4. An example of a sliding joint is
A. Elbow joint
B. Neck joint
C. Knee joint
D. Wrist joint
Answer:
hello
I
guess
its
Elbow joint
Select the correct answer.
Imagine that an exchange student from China visits your class. While your teacher discusses how the United States has a limited government, the Chinese student raises his hand and asks why the government has limited power. Which point best highlights why the US government has limited power?
A.
A limited government means citizens pay fewer taxes.
B.
A limited government helps people avoid breaking the law.
C.
A limited government protects individual freedoms.
D.
A limited government prevents businesses from being too powerful.
Answer:
Option C
Explanation:
A limited government protects individual freedoms.
Hope this helps!
1. What is the first step of the scientific method?
Answer:
The first step in the Scientific Method is to make objective observations.
Parkinson's disease Is the disorder contagious?
a person has a mass of 63.4kg what is the weight in pounds
Answer:
1 kg= 2.204 lb
63.4kg x 2.204 Ib/ 1 kg= 139.7 lb
Explanation: