Answer:
You can recover the dissolved salt by heating the water. When heated the water will evaporate, and the salt will be left. It's mass would be the same as at the beginning.
One way of representing the structure of an ecosystem is through ecological pyramids. Ecological pyramids represent the amount of organisms, biomass or energy at each tropic level, which most often is in a pyramidal shape. Why are most visual representations of ecosystems in the shape of a pyramid?
Select one:
a. Producers use a low amount of sunlight and produce a high amount of energy for all other organisms.
b. Very large carnivores (for example, wolves) have the most energy available to them from the trophic levels below.
c. The large number of primary consumers supplies a large amount of energy for fewer autotrophs.
d. At each trophic level, energy is lost (as heat) in the transfer of energy from one trophic level to another.
what is helium plz answer , have a beautiful good morning:-).
Answer:
Helium is a noble gas meaning that it has a full outer shell of valence electrons. It's not reactive because of this.
Explanation:
Which statement is NOT true and female reproductive cycles:
a. The ovarian cycle and the menstral cycle are linked.
b. The endometrium is prepared as part of the menstral cycle to provide nutrients for the embryo that was developed during the ovarian cycle.
c. The ovarian cycle is extremely predictable and an extremely effective method of natural birth control
d. The menstral cycle starts with the onset of the release of the endometrium
Answer:
Answer C
Explanation:
The cycle can sometime be irregular, not predictable. This method of natural birth control has can fail 25% of the time, not extremely effective.
1) Define Automatic, central, peripheral nervous system.
2) Define Brain
3) Describe Red blood cell with its symptoms, preventive measure, and disease caused by it.
Answer:
sorry I just know one 2
Explanation:
A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body.
How is a genesis rock useful to humans?
Answer:
That sample, nicknamed the Genesis Rock, sample number 15415, was an anorthosite, a piece of the moon’s primordial crust. Geologists, hoping to learn more about the moon and its origins, selected the Hadley-Apennines landing site for precisely this reason. While not the oldest lunar sample brought back from the moon, geologists at the Manned Spacecraft Center (now known as the Johnson Space Center) later concluded that this rock was about 4 billion years old
Explanation:
IG SORRY IF ITS WROONG
Which Factor best explains why some people will react differnetly than others to the same dose of an antibiotic?
A. high potency
B. low concentration
C. Individual exposer
D. Individual suscepetiablity
Answer:
D. individual susceptibility.
Explanation:
I took a test and it was correct!
Which of these is an advantage of sporulation?
It produces large numbers of offspring.
It combines male and female cells.
It is a type of sexual reproduction.
It is commonly seen in yeast
Please help me im stuck on this question!!! Please hurry !!
Answer:
one of the smallest stars
Explanation:
there are trillions of stars and most of them are millions of times the size of our sun
PLZ help
Fuel-cell cars use hydrogen gas and release ___ into the atmosphere
A. Oxygen gas
B. Carbon dioxide
C. Fossil Fuels
D. Water vapor
Science (A P E X)
Answer:
D. Water vapor
Hope this helps!
Answer:
D water vapors
Explanation:
2. An organism's paired chromosomes
arranged in order from largest to smallest is called
Answer:
Karyotype
Hope it helps!
Answer:
karyotype, autosomes or “body chromosomes
Explain the nitrogen cycle and water cycle in your own words
18 points will give Brainlyist!!!
HELP
Answer:
nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification all in order
what step number do you always start with when using a dichotomous key?
Answer:
1
Explanation:
0_____________________________________0
The face says brainliest please!
Define fossilisation
Answer: A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age.
Explanation:
why it is important to know the speed of earthquake waves, the strength of the waves and how do we determine the location of the epicenter of an earthquake. ?
Answer: As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S wave.
Why do efforts to prevent all fires from occurring in forests actually tend to make these ecosystems more vulnerable to fire?
Answer:
they feed off of the efforts to control the fires on forests
Explanation:
they cause heat trapping for wildfires to grow. These patterns occurred in 1880 as a result, led multiple forest fires that were hard to control and over time increased chances of happening again.
which symptom is not included in the diagnosis of water intoxication?
Hyponatremia
Loss of electrolytes
Confusion
Cell shrinkage
Manipulating or changing an organism’s DNA is called _______________ _____________.
Answer:
Genetic engineering
Explanation:
16. Which of the following could describe a population that is decreasing
in size?
The birth rate and death rate remain the same
The death rate is becoming lower than the birth rate
The death rate is constant and the birth rate is increasing
The death rate is becoming higher than the birth rate
Answer:
The death rate is becoming higher than the birth rate.
Explanation:
Birth rate means the population increases, and death means decreases.
Answer:
The death rate becoming higher than the birth rate
Explanation:
if the death rate is becoming higher and the birth rate is getting lower then the population will die off and the birth rate would decress.
Question is specific and clearly
connects the relationship
between carbon dioxide (CO)
and temperature
Answer:
The Temperature rises as carbon dioxide levels rise. The temperature decreases when the carbon dioxide concentration falls.
Explanation:
A tiny part of the correlation is attributable to the relationship between temperature and carbon dioxide solubility in the surface of the ocean, but most of it is consistent with feedback from carbon dioxide to the environment. These changes are expected to be consistent with Earth's radiative balances and the function of greenhouse gases in climate change. While determining the cause and impact, initially or by some other method, between carbon dioxide and climate, may appear straightforward, it still is extremely difficult to find the cause and effect. Other changes include altered vegetation, earth surface properties, and ice-sheet extent in the glacial climate.
Other paleoclimate representatives allow us to comprehend the role of the oceans in climate change in the past and future. The ocean holds 60 times as much carbon as the atmosphere, and the change in carbon dioxide in the atmosphere is predicted throughout the past several hundred thousand years to be compared to carbon changes in the ocean. While oceans vary far more slowly than the atmosphere, in past CO2 fluctuations the ocean has played a key role and will play a part for millennia in the future.
Finally, paleoclimate data demonstrate that there is not only temperature about climate change. In the past, many other aspects of the climate have altered as carbon dioxide has changed. The snow was lower, the continents dried and the tropical mousses weaker during the glacial ages. Some of these changes may be independent; others may be closely associated with changing carbon dioxide levels. A thoroughness of research is to understand what these changes might occur in the future and how substantial these changes may be.. The Paleoclimatology Program of the NOAA provides scientists with a documentation of previous changes as an approach to understanding future climate change.
Which of the following is the best definition of alternative energy?
A. Energy sources that can be used in place of hydroelectric energy
B. Energy sources that can be used in place of wind energy
C. Energy sources that can be used in place of coal
D. Energy sources that can be used in place of fossil fuels
Answer:
D
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmentally harmful and are in short supply. Fossil fuels consist of natural gas, coal, and oil. Currently, fossil fuels are the most used energy source to heat our homes and power our cars.
Answer:
D.)
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmental harmful and are in short supply.
Alzheimer's disease has some lifestyle factors because
everyone can contract it in their lifetime.
it can be influenced by nutritional choices.
up until now there is no known cure for it.
it can be contracted through germs.
ITS BBBBBBB!!!!!!!!!
Answer:
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
Explanation:
it b
How can we improve energy efficiency in:
a. Industry?
b. Transportation?
c. Buildings?
Explanation:
a-3 ways to improve energy efficiency in industrial applications
Improve how applications are controlled. ...
Recover and reuse waste heat; and.
Improve maintenance programs to ensure critical equipment is functioning efficiently.
b-Corresponding to these three levels of energy efficiency in transport, three basis strategies exist to improve energy efficiency:
Avoiding increased transport activity and reducing the current demand for transport;
Shifting demand to more efficient modes of transport;
Improving the vehicles and fuels used.
c-There are three primary ways in which energy efficiency can be improved in residential, public, and commercial buildings: (i) through improved design and construction techniques that reduce heating, cooling, ventilating, and lighting loads; (ii) through building upgrades and the replacement of energy-using equipment; .
Answer:
C
Explanation:
beqause building work has very hard
HELP PLEASE
How do ocean currents affect weather in different parts of the world?
is leaves a sample matter why?
Help me please !!! :)
Answer:
they both have oxygen in the atmosphere
Explanation:
What is the function of dna ligase .
Answer:
I'm going with A
Explanation:
DNA ligate play an essential role in maintaining genomic integrity by joining breaks in the phosphodiesterase backbone of DNA that occur during replication and recombination, and as a consequence of DNA damage and its repair.
what do ducks and snake have in common.
Answer:
they both can see behind them
Explanation:
A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls look at the picture! I will mark whoever sounds best the brain! Ty!
Answer:
5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)
6.) Frequency of R: 0.5
7.)Frequency of R: 0.5
8.)Frequency of R: 0.375
Explanation:
5.) If R and B code for the different forms of the same protein then they are only a few possible out comes
6.) First calculate the total alleles in population
allele R= 40
Allele B=40
total allele = R+B= 40+40
=80
Now to find allele R frequency is:
(Total R alleles) / (Total allele in pop)
40/80=
0.5
7.)Calculate the total alleles
Alleles from for R
RR= 10
R=10x 2= 20
Multiply the value by 2 because there are 2 R alleles present in
RB=20
R=20
Number doesn't change there is only 1 R allele
Total R=20+20
=40
Alleles For B
BB=10
B=10×2
=20
Same thing here, two B alleles together so multiple by 2
RB=20
B=20
Total B= 20+20
=40
Total alleles in pop add
40+40
=80
Frequency of R
Total of R/Total Alleles
=40/80
=0.5
8.)Repeat the same thing in 7 but use different numbers
RR=10
R=10x2
=20
RB=10
R=10
Total R= 20+10
=30
Help multiple choice
Explain some of the processes involved in a scientific investigation.
Answer:
The steps involves making hypothesis, deriving predictions from the logical consequences and then carrying out experiments based on those predictions.
Explanation:
Step 1: make a observation .
Step 2: Formulate a statement or question.
Step 3: Form the hypothesis .
Step 4: make a prediction based on the hypothesis.
Step 5: test the hypothesis whether its true or not.
Step 6: use the results to conclude the experiment.
Answer:
Steps of a scientific investigation include identifying a research question or problem, forming a hypothesis, gathering evidence, analyzing evidence, deciding whether the evidence supports the hypothesis, drawing conclusions, and communicating the results
Explanation:
