Researcher collected data to determine volumetric bone density for four samples. The data are recorded in the table. What is the average bone density for the data samples
In order to determine the average bone density of the four samples, the sum of the bone densities is divide by 4.
What is bone density?Bone density refers to the how dense a given bone sample is.
The density of any substance measures how compact the substance is.
Bone density depends in such factors as:
age of the individual nutrition status exercise and level of activenessTo determine the average bone density of the four samples, the sum of the bone densities is divide by 4.
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Do we still have high tides and low tides during neap tides and spring tides? Yes or No?
Answer:Yes
Explanation:
7 days after a spring tide, the sun and moon are at right angles to each other. ... This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average. Neap tides occur during the 1st and 3rd quarter moon, when the moon appears "half full.
A change in the acidity of mountain streams would most likely be the result of
Why is biodiversity important in ecology?
Answer:
its the key indicator of the health of an ecosystem
why living things need to move
Answer:
to stay fit and healthy also to eat drink and sleep because every living things need food water and sleep
Am i correct?
mark brainliest
Answer:
you're right because green and brown would fit in better and they're not resistant to pesticides :)
Explanation:
How does group behavior increase biotic potential?
- It influences the amount of intraspecific competition.
- It increases population under harsh environmental conditions.
- It decreases reproductive rates for a "group behavior" population.
- It supports all individuals of the population to obtain needed resources.
Answer:
D-- It supports all individuals of the population to obtain needed resources.
Explanation:
You got it right
An air mass forms over the North Pole region describe what you think the temperature and humidity of this air mass will be like?
Answer: hope this helps :)
The motion of air mass motion is usually based upon the air flow in the upper atmosphere. As the jet stream changes intensity and position, it affects the motion and strength of air masses. Where air masses converge, they form boundaries called "fronts".
3-D view of a cold front.
Fronts are identified by change of temperature based upon their motion. With a cold front, a colder air mass is replacing a warmer air mass. A warm front is the opposite affect in that warm air replaces cold air. There is also a stationary front, which, as the name implies, means the boundary between two air masses does not move.
The motion of air masses also affects where a good portion of precipitation occurs. The air of cold air masses is more dense than warmer air masses. Therefore, as these cold air masses move, the dense air undercuts the warmer air masses forcing the warm air up and over the colder air causing it to rise into the atmosphere.
So, fronts just don't appear at the surface of the earth, they have a vertical structure or slope to them as well. Warm fronts typically have a gentle slope so the air rising along
What are the advantages of using solar energy instead of coal and oil for energy?
Answer:
First of all, there is less pollution. Also, solar energy is that it is renewable
Answer:
doesn't release harmful pollutants or greenhouse gas emissions—like carbon dioxide—into the air and water supply.
Which structure is the simplest level of organization in humans?
organ systems
cells organs
tissues
Answer:
organ cells
Explanation:
cells are the building of life
The simplest level of organization in a human being is cells.
Where does the heat from current climate change ultimately come from?(1 point)
Energy from fossil fuels, created by burning them.
Energy from inside Earth, trapped by carbon dioxide in the geosphere.
Energy from inside Earth, released by burning fossil fuels.
Energy from the sun, trapped by carbon dioxide in the atmosphere.
As Earth's temperature increases, it affects the planet in many ways. Which of Earth's processes are affected by the rising temperatures? Select the two correct answers.(1 point)
colder weather and lower sea levels
warmer weather and lower sea levels
fewer weather events and slower glacier retreat
increased precipitation and increased sea levels
increased cloud cover and decreased Arctic sea ice
Which of the following describes a positive feedback loop? (1 point)
Temperatures rising cause ice and snow to melt, which causes more heat to be absorbed by the ground, causing temperatures to rise more.
Temperatures rising cause ice and snow to melt, causing animals to lose their habitats and making it harder for them to find food.
Melting ice causes more sunlight to be reflected into the atmosphere, causing the temperatures on Earth to increase, which then causes more ice to melt.
Melting ice causes more carbon dioxide to be absorbed from the air, trapping less heat in the atmosphere, which then causes temperatures to decrease.
Match the phenomenon with the correct impact.(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Reduces an individual's contribution to greenhouse gas emissions by 73%
Protects land from floods and rising seas
The primary cause/s of climate change
Results from an increase in farm lands
Which is the most effective way for an individual on their own to reduce climate change?(1 point)
recycle
buy organic produce
switching to a more plant-based diet
turn off the lights after leaving rooms
Climate change causes changes in weather conditions over a long period of time.
What is climate change?Climate change refers to those long time changes in the weather condition of a place.
The heat from current climate change ultimately comes from energy from the sun, trapped by carbon dioxide in the atmosphere.
As the earth's temperature increases, the processes on earth are affected such as increased precipitation and increased sea levels.
An example of a positive feedback loop is;
Temperatures rising cause ice and snow to melt, which causes more heat to be absorbed by the ground, causing temperatures to rise more.Melting ice causes more sunlight to be reflected into the atmosphere, causing the temperatures on Earth to increase, which then causes more ice to melt.The most effective way for an individual to reduce climate change on individual basis is to turn off the lights after leaving rooms.
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How are photosynthesis and cellular respiration related?
Answer:
they are both involved in the development process of plants
Explanation:
because that's the answer
Please help me I need to pass the test so iva. Be able to play soccer
Earth and space
Answer:
d
Explanation:
Methods for the Culturing
Answer:
There are several types of bacterial culture methods that are selected based on the agent being cultured and the downstream use.
• Broth cultures.
• Agar plates.
• Agar based dipsticks.
• Stab cultures.
• Culture collections.
•Solid plate culture of thermophilic microorganisms.
• Isolation of pure cultures.
How might evidence from an experiment such as this help shape Darwin’s ideas about evolution?
Explanation:
Darwin, is a brilliance ahead of his time.
He has proven evolution by his observations in the field. EXAMPLE/
He started with plants..a control group & experimental plants he grew himself. After that, he has proven, (evolution theory with environmental variances determines how animals adapt to a new environment)... it is not possible to grow a tropical plant in the midwest without warmth, humidity, water etc...
He had proven through his observations that giraffes have long necks so they can reach the higher branches of food while living in arid climates.
While his counterparts disagreed, he had visited these places worldwide 2 study this.
HELP ! 50 POINTS !
A). 3 is the nucleus; 5 is a ribosome
B). 1 is the rough endoplasmic reticulum: 2 is a chloroplast
C).4 is a ribosome; 1 is the smooth endoplasmic reticulum
D).2 is a mitochondrion: 6 is a Golgi apparatus (Golgi body)
Answer:
The answer should be I think D) 2 is a mitochondrion: 6 is a Golgi apparatus (Golgi body)
Explanation:
I'm not to sure though so wait until somebody else also answers
but I'm pretty sure D is the answer
Is the liver able to store any molecules? Explain.
Answer: Yes
Explanation:
The liver stores vitamins, minerals, glucose, and a variety of other nutrients. These are all made of molecules and stored in the liver.
Which term is an example of force?
A. energy
B. mass
C. weight
D. Work.
Answer:
c.Weight is an example of force.
Complete the sentence. The ________________ of extra rabbits into a forest ecosystem can affect the population of other herbivores already living there.
- birth rate
- death rate
- emigration
- immigration
The immigration of extra rabbits into a forest ecosystem can affect the population of herbivores living in the forest.
What is immigration?Immigration is the movement of people or animals from external locations into a population.
With new individuals moving into a population, the population size increases with other factors being constant.
With the increase in the population size, competition for resources increases accordingly.
Thus if extra rabbits move into a forest ecosystem, the population of herbivores existing in the ecosystem would be affected because competition for food would increase.
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Answer:
one never trust expert verified or tutor verified there wrong often also its d
Explanation:
the man who posted the question said it was d
1. After DNA replication, what happens to the amount of DNA in the cell?
a) it stays the same
b) it is doubled
c) it is reduced by half
Answer: it is doubled
Explanation:
Least ecological tolerance in severe storms
Answer:
thermophiles
Explanation:
pls help i want to go to bed. its 2am rn T-T
Pick one of the two types of equilibrium (static equilibrium OR dynamic equilibrium) and describe in detail how your body monitors it and sends a signal to the brain when it senses a change? Be thorough in your explanation.
Include the following: location, receptor name, mechanism of action (how does it detect changes in body position?), what types of changes does it detect/respond to? nerve responsible for sending impulse, area of brain responsible for integrating/deciding on the course of action, does it respond to 1 plane or more than 1 plane?
were the gases used to create Earth's primitive Oceans and what were the contents of the liquid pool after the experiment ran for a week?
Gases used to create Earth's primitive Oceans were nitrogen (N2), Oxygen (O2). Hydrogen peroxide (H2O2), and maybe some carbon monoxide (CO) and contents of the liquid pool after
experimentation were nitrides
Gases used to create Earth's primitive Oceans were, Oxygen, Hydrogen, Cesium, and Phosphorus and contents of the liquid pool after experimentation were nucleic acids.
Gases used to create Earth's primitive Oceans were, Oxygen, Hydrogen, Cesium, and Phosphorus and contents of the liquid pool after experimentation were Lipids.
Gases used to create Earth's primitive Oceans were nitrogen (N2), Carbon dioxide (CO 2), water vapor (H 20), and maybe some carbon monoxide (CO) and contents of the liquid pool after
experimentation were amino acids.
VOUS
Car Makan
The gases present at the origin of the earth were believed to be nitrogen (N2), Carbon dioxide (CO2), water vapor (H20), and maybe some carbon monoxide (CO).
Origin of the earthThe earth is believed to have originated in what scientists have referred to as the big bang in which several gases were formed.
The gases present at the origin of the earth were believed to be nitrogen (N2), Carbon dioxide (CO2), water vapor (H20), and maybe some carbon monoxide (CO). The gases aggregated to form amino acids hence the origin of the initial life forms.
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the role of a control in an experiment is to
Answer:
Controls allow the experimenter to minimize the effects of factors other than the one being tested. It's how we know an experiment is testing the thing it claims to be testing. This goes beyond science — controls are necessary for any sort of experimental testing, no matter the subject area.
Explanation:
Hope it helped <3
The role of control in an experiment is to minimize the effects of factors.
Scientific control is an experiment in which a subject (or a group of subjects) is not tested for a dependent variable (or variables). The addition of control to an experiment is essential for obtaining the results of the empirical data.
A control variable is a variable that is held constant throughout a study. It is not a study variable, but it is controlled because it has the potential to affect the study results.
It is used for comparisons to confirm the results of an experiment. It is used to guarantee that the measured dependent variable is influenced only by the changed independent variable and not any other variables (controls) in the experiment.
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12. If Mr. Rauch wants to create an African violet with variegated foliage, then what must be true about the plant he chooses to use as the seed parent (female)
To create an African Violet whose leaves have various colors, Mr. Rauch will have to use seed from a female parent whose foliage is also variegated because, in flowers, variegation of foliage is inherited from the female parent.
What is an African Violet?African Violets are a type of plant that is very popular for decorating the house.
They are easy to maintain and bloom at least 10 times in a year. It's scientific name is Genus Saintpaulia.
See the link below for more about African Violets:
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why George Emil Palade
describe as father of cell biology?
George Emil Palade was a cell biologist who applied electron microscopy to the study of the cell where he observed the ribosomes, where protein synthesis is carried out.
Who was George Emil Palade?He was a Romanian-born, American-naturalized cell biologist who used the electron microscope to study the cell, his contributions include:
Studies on mitochondria, the Golgi apparatus, and other cellular organelles, and on microsomes made up of nucleic acids.The discovery of ribosomes, this being the macromolecules responsible for the synthesis or translation of proteins.Studies on histological structures such as the basement membrane or adhesion complexes in epithelia.Therefore, we can conclude that George E. Palade was especially relevant to cell biology as he applied electron microscopy to the study of the cell where he observed ribosomes and various cell organelles.
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Phases of Mitosis
Phase
Event
Prophase
1.
Chromosomes attach to spindle fibers.
2. Metaphase
Anaphase
3.
4.
New nuclear envelope forms.
Answer:
prophase-The chromosomes become viseble
metaphase- chromosomes attach to spindle fibres
Anaphase-The Spindle fibres line up in a centre called equator
telophase-Sprindle fibres reach the poles
How many types of joints are there in the human body?
A. 4
B. 2.
C. 12
D. 6
Please select the best answer from the choices provided.
A
B
Ο Ο Ο Ο
С
D
Answer:
it would be 6
Explanation:
6 types of joints in the human body
I need help with this question
Which type of molecule provides cells with energy? (5 points)
Carbohydrate
Nucleic acid
Protein
Water
Answer: protein
Explanation:
because cats
Answer:
protein
Explanation:
proteins are awesome