Answer:
N-14 is stable, N-14 is not stable, it is radioactive.
PLZ HELP ME !!!!
Match the term to its description.
Group of answer choices
biotic factor
[ Choose ]
individual
[ Choose ]
population
[ Choose ]
community
[ Choose ]
abiotic factor
[ Choose ]
answers:
1. A nonliving part of the environment
2. All of the individuals of the same kind living together in an area
3. A living thing
4. All of the population in an ecosystem
5. The basic level of or organization in an ecosystem
Answer:Each living organism depends on nonliving and living factors for survival in its environment. - Organisms depend on each other in all types of ways.
Explanation: I do not have an Explanation to this and never will!
How do you make 340 mL of a 4 M solution from a 20 M stock solution
We have that you make 340 mL of a 4 M solution by dissolving 20M stock solution in 68ml water
From the question we are told
How do you make 340 mL of a 4 M solution from a 20 M stock solution
Molecule
Generally the equation for the Molarity is mathematically given as
M1V1=M2V2
Therefore
20*x=4*340
x=68ml
Therefore
you make 340 mL of a 4 M solution by dissloving 20M stock solution in 68ml water
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In the diagram below, which cells are involved in the process of reproduction?
a. cell 3, only
b. cells 2 and 3
c. cells 1 and 2
d. cell 1, only
Answer:
1 and 2
Explanation:
i think for reproduction to occur there must be fussion of the sperm and the ovum .these are the basic reproductive cells
Science is based on "natural" causes and effects. What does "natural"
mean in this context?
O Phenomena that can be reliably observed with senses or instruments; NOT
supernatural.
O Phenomena that occur on their own without being manipulated; NOT
controlled.
O Phenomena that occur without the direct participation of humans; NOT
artificial.
Answer:
○Phenomena that occur on their own without being manipulated;Not controlled.
Explanation:
the word natural means which already existed in nature and not controlled by anyone or a thing, where the Phenomena that occur on their own without being manipulated; Not controlled.
9. Briefly describe the difference between independent and dependent variables.
Explanation:
he main difference between Independent Variables and Dependent Variables is in the definition. Independent variables in research can be manipulated or altered to see their impact on other variables. The dependent variable is dependent on other variables. It is the variable that is measured or tested by a researcher.
Which of the following descriptions about electrons is correct?
Electrons are located in nucleus
O Electrons are positively charged
The number of electrons in an neutral atom equals to the number of protons in the nucleus
O All electrons in a carbon atom are at the same distance to the nucleus, thus they form a single layer of electron shell
The number of electrons in a neutral atom equals to the number of protons in the nucleus.
Which of the following are reliable measurements of water quality that can be tested?
Check all that are true.
a.turbidity level
b.microbial load
c.appearance of water
d.pH level
Answer:
c:appearance of water or a: turbidity level
Which continent reports the greatest number of edible species? ____________________________
Answer:
it is africa:)hope it helps you
please help me 20 points !!the answers choices are
a- insertion
b-deletion
c- both insertion and deletion
d-impossible to determine
Answer:
C.an insertion or a deletion
Explanation:
trust
in health body temperature is maintained between
Answer:
A healthy body functions best at an internal temperature of about 37°C (98.6°F). But everyone has their own individual "normal" body temperature, which may be slightly higher or lower. Our bodies also constantly adapt their temperature to environmental conditions. It goes up when we exercise, for instance.
Explanation:
hope it helps
Brainliest please
Explanation:
Why is ATP so useful for cellular energy
Answer: ATP is useful because it gives energy to make things and for cellular process
Explanation:
ATP is the main source of energy for most cellular processes. When energy is not needed by the organism, the phosphate group is added back to AMP and ADP to form ATP - this can be hydrolyzed later as per required. Thus, ATP functions as a reliable energy source for cellular pathways.
Which of the following is a sedimentary rock?
shale
quartz
slate
basalt
Answer:
Shale
Explanation: It is a sedemintary rock
When bone marrow cells go through the cell cycle, the two identical daughter cells that result form mitosis have very different functions. Following g1, one daughter cell leaves the cell cycle and becomes a specialized blood cell. The second marrow cell remains in the marrow as a stem cell and repeats the cell cycle. What molecule is responsible for determining the fate of each cell?
Answer:
The cell-intrinsic properties arise from a cleavage of a cell with asymmetrically expressed maternal cytoplasmic determinants (proteins, small regulatory RNAs and mRNA). Thus, the fate of the cell depends on factors secreted into its cytoplasm during cleavage.
Q16.A needle can be made to "float" on the surface tension of water. What causes this surface tension to form?
Select one:
a. The ability of water to regulate temperature
b. The cohesion of water molecules to each other
c. The ability of water to act as a solvent
d. None of the above X
Answer:
B
Explanation:
Water has surface tension due to cohesion that allows it to 'stick' together. This cohesion is created by the fact that water is polar and has unequal distribution of charges. The oxygen becomes slightly negative as it is surrounded by positive hydrogen. In turn, the hyrdogen becomes slightly positive.
This means that the hydrogen molecule is temporarily attracted to the oxygen of another molecule. This causes surface tension and allows light objects to float on top of it
Hope this helps!
Everyone,
Bacteria that convert atmospheric nitrogen into a form that plants can use is called nitrogen-fixing-bacteria?
True?
or
False?
Thank You!
Answer:
True
Explanation:
It's considered as ammonia fertilizer.
If you are a candidate for presidential election and you are interviewed in a talk show, how will you answer this question by the host, What will be the first policy that you implement if you will win that would help improve the state of science and technology in the country?
Answer:
Government Jobs: Top 10 Interview Questions
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ...
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ... Why do you want to work at this agency? ...
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ... Why do you want to work at this agency? ... Tell us about yourself. ...
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ... Why do you want to work at this agency? ... Tell us about yourself. ... Why did you leave your last job? ...
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ... Why do you want to work at this agency? ... Tell us about yourself. ... Why did you leave your last job? ... What do you think of your previous boss? ...
Government Jobs: Top 10 Interview QuestionsWhy do you want to work for the government? ... Why do you want to work at this agency? ... Tell us about yourself. ... Why did you leave your last job? ... What do you think of your previous boss? ... This position is less senior than you
What role have plate tectonics played in the formation of the earth's surface?
Answer:Plate tectonics role on earths surface by creating mountains, valleys, canyons, volcanoes, earthquakes, basins and different rock formationslatformationse
Explanation:
Which is true about the waste produced from mining? (1 point)
1. Toxic waste occasionally leaks to nearby ponds.
2. Toxic waste is typically dumped in nearby ponds.
3. Toxic waste is typically dumped in ponds, but only in ponds that cannot influence the environment.
4. Toxic waste used to be dumped into nearby ponds, but not anymore.
Toxic waste occasionally leaks to nearby ponds. That is option 1.
Wastes from miningMining is a process used by geologist to extract valuable minerals that are naturally deposited within the earth.
Example of such minerals are:
metals and coal, oil shale and gemstones, limestone and chalk, rock salt, potash, gravel, and clay.While mining processes are carried out, it leads to the generation of waste products such as:
ferrous and nonferrous metal ores, sulfur ores, apatite-nepheline concentrates, coal wastes and halite flotation wastes.These mining wastes can leak into the nearby ponds after a heavy down pour leading to the contamination of the ponds.
Learn more about mining wastes here:
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Answer:toxic waste is typically dumped in nearby ponds
Explanation:
Obese humans probably have high levels of leptin because
Obese humans probably have high levels of leptin because the brain does not respond to leptin, so they keep eating despite adequate (or excessive) fat stores
Miranda is investigating the concept of gravity. She dropped a flat sheet of paper and a sheet of paper crumpled into a ball from the same height. She
repeated the procedure from various heights.
For every trial, the paper ball hit the floor in less time than the flat sheet of paper. Why did the paper ball always fall faster?
A. Gravity is stronger for the paper ball.
B. Air can get trapped in the paper ball.
C. There is no friction for a ball-shaped object.
D. The flat sheet was affected more by friction.
Answer: C or A
Explanation:
Look I'm not very sure so don't use this answer if you don't believe it. I'm only in 5th grade.
are genes truly inherited 100% independently
Answer:
You receive 50% of your genes from each of your parents, but the percentages of DNA you received from ancestors at the grandparent level and further back are not necessarily neatly divided in two with each generation.
Explanation:
So No
Answer:
NO
Explanation:
You recieve exactly 50% of your genes from your mom and 50% from your dad. In total you will have a total of 100% but from two seperate sources. Hope this helps ;)
Please help look at screenshot
Explanation:
cat- homologous structure
human- embroyological structures
6. What are some natural sources of nitrate and ammonia fertilizer? Select all that apply.
nitrogen-fixing bacteria
dead organic matter
dung
lightning
pls help you will be reported if it’s wrong.
no links please
anyone can answer if u know !
Answer:
A and b
Explanation:
Nitrogen fixation is a natural event, also dead organic matter isn't a limited resource.
The following health statistics are available on the Internet for country Z about two disease outcomes. Disease A has an annual incidence of 225 per 100,000 population and an annual mortality rate of 150 per 100,000. Disease B
has an annual incidence of 500 per 100,000 population and the same annual mortality rate as disease A. Neither disease A or B has a cure. What would you conclude regarding the burden of these diseases in country Z?
a. The proportionate mortality is higher for
disease A than disease B
b. The case fatality ratio is higher for disease B
than disease A
c. Disease A has a higher prevalence than
disease B
d. Disease B has a higher prevalence than
disease A
e. Years of potential life lost (YPLL) is greater
for disease B than disease A
The burden of diseases A and B in country Z is that disease B has a higher prevalence than
disease A. That is option D.
Health statistics of Country ZHealth statistics is used by professionals to summarize the health status or information on the health of individuals in a particular geographical location.
The basic statistic tools that can be used to check the health status of a population are,
prevalenceCase fatality ratioThe prevalence rate is the total number of cases of a disease existing in a population divided by the total population.
The prevalence rate of disease A = 225 per 100,000 population while the prevalence rate of disease B = 500 per 100,000 population.
Therefore, the burden of diseases A and B in country Z is that Disease B has a higher prevalence than
disease A.
Learn more about prevalence here:
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What are the two branches of the somatic nervous system?
Answer:
Spinal nerves and Cranial nerves
Spinal nerves: They are mixed nerves that carry sensory information into and motor commands out of the spinal cord.
Cranial nerves: They are the nerve fibers that carry information into and out of the brain stem.
The row of energy in a grassland ecosystem is shown
Hognose snake
Owl
Toad
Spider
Rabbit
Sparrow
Cricket
Grass
Mouse
Based on the diagram, which two populations best represent trophic levels that receive the
LEAST amount of the total energy provided to the ecosystem by the grass?
A Crickets and sparrows
B
Toads and spiders
C Rabbits and mice
D
Hognose snakes and owls
The populations with the trophic levels that receive the least amount of the total energy from the grass would be Hognose snakes and owls.
Trophic LevelThe higher we move up a trophic level, the lower the amount of energy transferred from the previous levels.
More precisely put, only about 10% of the total energy available at one trophic level is transferred to the next while the rest is lost as heat to the surrounding.
In this case, Hognose snakes and owls represent the two highest trophic levels in the ecosystem. Thus, their populations would receive the lowest amount of energy from the producer, the grass.
More on energy transfer in trophic levels can be found here: https://brainly.com/question/13267087
Answer:
D
Explanation:
i just took test
PLZ HELP DUE IN 30 MINS
1) Why is having no leaves a good adaptation for plants found in the desert?
2) What is the evolutionary significance of developing pouches? (What makes a pouch a good adaptation?)
Answer:
1)The leaves and stems of many desert plants have a thick, waxy covering. This waxy substance does not cover the stomata, but it covers most of the leaves, keeping the plants cooler and reducing evaporative loss. Small leaves on desert plants also help reduce moisture loss during transpiration.
Since the initial emergence of human immunodeficiency virus (HIV), this disease has spread across the world. This type of spread is known as a
Given what we know, we can confirm that the spread of disease in the way that was observed with the initial emergence of the human immunodeficiency virus (HIV), can be referred to as a pandemic.
What is a pandemic?This is a word we use to describe the seemingly or initially uncontrollable spread of an infectious disease across a very large region. The case of HIV was practically global and required great efforts to bring it under control.
Therefore, we can confirm that the spread of disease in the way that was observed with the initial emergence of the human immunodeficiency virus (HIV), can be referred to as a pandemic.
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5. Which of the following is incorrect combination of disaccharide sugar? A. Maltose glucose + glucose B.Sucrose galactose + fructose C. Lactose glucose + galactose D. Non
Broadleaf trees have _________.
needles.
wide leaves
evergreen leaves.
thin leaves
Answer: thin leaves
Explanation:thin leaves because they are supposed to resemble needles
The answer is wide leaves
Explanation:
I know because I took the test and I got 100 percent
