Answer:
E
Explanation:
Hope this helps
ey's Bell Jar...
Abstract
Background
Photosynthesis maintains aerobic life on Earth, and Joseph Priestly first
demonstrated this in his eighteenth-century bell jar experiments using mice and
mint plants. In order to demonstrate the fragility of life on Earth, Priestley's
experiment was recreated using a human subject placed within a modern-day
bell jar.
Methods
A single male subject was placed within a sealed, oxygen-depleted enclosure
(12.4% oxygen), which contained 274 Cz and C plants for a total of 48 h. A
combination of natural and artificial light was used to ensure continuous
photosynthesis during the experiment. Atmospheric gas composition within the
enclosure was recorded throughout the study, and physiological responses in the
subject were monitored.
Results
After 48 h, the oxygen concentration within the container had risen to 18.196, and
hypoxaemia in the subject was alleviated (arterial oxygen saturation rose from
86% at commencement of the experiment to 99% at its end). The concentration
of carbon dioxide rose to a maximum of 0.66% during the experiment.
Conclusions
This simple but unique experiment highlights the importance of plant life within
the Earth's ecosystem by demonstrating our dependence upon it to restore and
sustain an oxygen concentration that supports aerobic metabolism. Without the
presence of plants within the sealed enclosure, the concentration of oxygen
would have fallen, and carbon dioxide concentration would have risen to a point
at which human life could no longer be supported.
Answer:
heyyyyy
Explanation:
Varicella-zoster is the virus that causes chickenpox. The average incubation period is 14 to 16 days after exposure. A person usually experiences a mild fever and fatigue for 1 to 2 days before rashes appear all over the body. A person having had chickenpox as a child may have the virus lay inactive in the nerve cells for many years only to reactivate much later as an adult in the form of shingles, which results in a very painful rash. This information suggests that the reproductive cycle of the varicella virus is -
a)lytic for shingles because the virus causes rashes to appear on the skin.
b) lysogenic for chickenpox because the virus attacks the mucous membranes.
c) lysogenic because the virus is a varicella-zoster virus.
d) lytic for chickenpox because the symptoms appear soon after infection.
Answer:d
Explanation: because it’s true
What is a striation??
Answer:
In geology, a striation is a groove, created by a geological process, on the surface of a rock or a mineral. In structural geology, striations are linear furrows, or linear marks, generated from fault movement. The striation's direction reveals the movement direction in the fault plane
8. Which has the highest heating value?
- Bituminous coal
- Anthracite
- sub bituminous coal
- Lignite
Answer:
...............Anthracite
hat do the following results from the TEST FOR LIFE tab indicate about the sample?
..........become butterfly after pupa stage.
1-Caterpillar
2-egg
3-pupa
4-tadpole
Answer:
caterpillar
Explanation:
caterpillar become butterfly after pupa stage
In subduction, what determines which plate will be on top and which will be on bottom?
what would be the mass of a charger block (Has to be grams)
Answer:
23 grams
Explanation:
What is most likely the author’s purpose for writing this article? to explain how to classify living things to explain the production of food and how life uses energy to explain the importance of flies and maggots to explain past experiments that disproved spontaneous generation
HURRY UP AND DON"T BE ON NO FUNNY STUFF!!!!!!!!!!!!!!
Answer:
The answer is D or to explain past experiments that disproved spontaneous generation
Explanation:
Answer: D
Explanation:
I got it right on edge
Name three similarities between Mitosis and Binary fission.
1.
2.
3.
The Kinetic Molecular Theory explains the movement and overall behavior of gases. A scientist claims to have found evidence
which requires a different explanation. What would a committee evaluating thescientist's claim MOST LIKLEY do first?
A. Add the idea onto the present theory.
B. Ask the scientist to conduct further research.
C. Experiment to see if similar results are observed.
D. Reject the idea because theories cannot be changed
Answer: C
Explanation:
Imagine two closely related, but separate, species of fish reproduce and the hybrids offspring have higher fitness than either of the parent species. Given enough time, the most likely outcome will be: Group of answer choices The two original species will eventually fuse into a third new species, and disappear. The two original species will remain, and a third new species will appear. Nothing: the two original species will remain, and the hybrids will eventually disappear.
Answer:
The two original species will eventually fuse into a third new species, and disappear.
Explanation:
According to Darwin's theory of evolution, species that are better adapted to their environment have greater chances of surviving long enough to reproduce and pass on these favourable characteristics to their offspring. This is known as 'survival of the fittest'.
The original species lack the resilience of the new hybrid species hence the two original species will eventually disappear and fuse into the third specie.
Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.
Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:
Pick a variable that might change as you go deeper in the lake on a given day.
Do a little research on that variable to determine how you might measure it in a lake.
Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.
Type your response to each field in the space below that field:
Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this last.)
Purpose: (Why are you doing this experiment?)
Hypothesis: (What do you predict from this experiment and why?)
Procedure/Method: (How will you specifically carry out your experiment to test your prediction?)
Observations: (What specifically would you look for and record?)
Data analysis: (With this kind of data, what would be the best way to present it?)
Conclusion: [No need to enter anything here for now.]
References: (List any references you used to design the experiment. Note that for a full experiment write-up you’d also list any references you used while carrying out the experiment or in analyzing your results.)
Answer and Explanation:
Variable: dissolved oxygen
Title: Oxygen variation as a water quality indicator.
Purpose: To study how dissolved oxygen varies with depth
Hypothesis: The percentage of dissolved oxygen will decrease as depth increases.
Procedure/Method:
Selection of sampling spots, according to the morphometry of the lake, different depth, water currents inputs and outputs, aquatic vegetation, and lake type of use. In each spot water samples will be taken using a Niskin bottle. The sample will be taken from different depth: 5 meters deep, 10 meters deep, and 15 meters deep (photic zone).Dissolved oxygen (DO) will be measured in each sample, by using a multiparameter sensor. In a field sheet to evaluate the parameter, the %DO by site and depth will be recorded.Observations:
%DO in each site and depth will be recorded in order to analyze how it varies with depth.
Data analysis:
According to different indicators of water quality in a lake, the observed %DO will be compared and analyzed to evaluate the sanity state of the lake water. Example of valuation scale,
NORMAL index: Oxygen concentration in the water column is found to be sufficient for the fish survivalREGULAR: Decrease in oxygen concentration at greater depth, values below saturation in the backgroundCRITICAL: Null oxygen concentration in all or part of the column profile of water. Probable fish mortality events.According to the taken data, observations on the study site will be taken, such as the variation in oxygen concentration as it gets deeper, until reaching hypoxia level, where fishes can not survive. Data can be presented in tables and in graphs, in both cases comparing sampling sites and depth, making a focus on the valuation scale.
Conclusion:
Association of the oxygen variation with the sanity state of the lake, microbiology decomposition processes at different depths, eutrophication state, among others.
References:
- Quality monitoring in San Roque waters. INA-CIRSA. 02/26/2013
- Quality Monitoring Program of Water from Los Molinos Reservoir. Articulation and Institutional Synergy for the Water Resources Preservation. Cossavella A, Bazan R. 2018
- Limnology course. Córdoba National University, UNC, 2018
The mountains of the Sierra Nevada play a role in the formation of desert in eastern California and Nevada.
What is this an example of?
Answer:
The correct answer would be - The lithosphere influences the atmosphere and biosphere .
Explanation:
The mountains of the Sierra Nevada play the role of a barrier that blocks the air or wind that brings the clouds filled with water to eastern California and Nevada as it can not pass the mountains and reach the other side of mountains which cause less or no rain to this region.
Rain is a very important aspect for the region to be less diverse in plants and animals as most of them require water but as it is described there is no or very little precipitation so it becomes desert.
This makes it an example of the lithosphere influences the atmosphere and biosphere .
What percentage of people rank public speaking as their number one fear in life?
41%
50%
O 15%
0 95%
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Groups of cells work together as tissue. Groups of tissues from organ systems. True or False
Answer:
True
Explanation:
Answer:false
Explanation:
Does global warming increase the amount of defective eggs birds lay
Answer:
Climate change is making British birds lay their eggs earlier in the year, according to a major survey of how common species are changing their behavior to cope with warmer temperatures. so to combat it they basically lay eggs when it does not effect the eggs.
Explanation:
what is not a prevention method for the milkweed bug?
Answer:
remove leaf litter and spent stallis in the fall
Explanation:
Anna stated that carbon monoxide could not be organic because it is a gas. what is wrong with her statement?
A.) her statement is correct.
B.) Organic molecules can be gases.
C.) carbon monoxide is not a gas.
D.) Carbon monoxide is not organic because it is not produced by living things.
Answer:
from my point of view the answer should be carbon monoxide is not organic because it is not produced by living things the answer should be D
Which of the following structures are found in eukaryotic cells? Check all that apply. endoplasmic reticulum mitochondria nucleoid Golgi apparatus
which of the following structures are found in both eukaryotic cells and prokaryotic cells? check all that apply. nucleus flagella ribosomes DNA nucleoid cell membranes endoplasmic reticulum
Answer:
endoplasmic reticulum, mitochondria, and golgi apparatus
For the second question: flagella, ribosome, DNA, and cell membranes
Explanation:
i got it right :)
Answer:
1st: 1, 2, 4
2nd: 2, 3, 4, 6
Explanation:
trust
Explain the relationship between the length of a Great White
Shark and how much food it eats per year.
Answer:
Explanation:
Every living thing grows. It needs energy to grow. It gets energy through food. When it doesn't have enough energy, it won't grow as fast. When it does, it will grow normally. If it get's more than enough, it will grow faster. One exception is if that organism is a human, and is having a growth spurt.
ATP passes are enzymes that help come for ATP into ADPS sales when a person exercises ATP pass directly increase which of the following
Answer:
is the adps four the formiula
Explanation:
brainscape: Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highly specialized ribonucleases that degrade mRNA soon after its synthesis. C) are sequence-specific DNA endonucleases. D) are very specific proteases that cleave peptides at only certain sequences. E) catalyze the addition of a certain amino acid to a specific tRNA. c The biological role of restriction enzymes is to: A) aid recombinant DNA research. B) degrade foreign DNA that enters a bacterium. C) make bacteria resistant to antibiotics. D) restrict the damage to DNA by ultraviolet light. E) restrict the size of DNA in certain bacteria.
Answer:
C) are sequence-specific DNA endonucleases
B) degrade foreign DNA that enters a bacterium.
Explanation:
Restriction enzymes are the proteins that cut the DNA at a specific sequence.
Restriction enzymes are also known as restriction endonuclease produced by bacteria that recognizes a specific sequence on DNA and split it by catalyzing the hydrolysis or addition of water molecule. So, Restriction enzymes are sequence-specific DNA endonucleases.
The biological role of restriction enzymes is to restrict the entry of foreign DNA into the bacterium. Restriction enzymes have the ability to restrict the number of bacteriophage strains that affect bacteria.
Hence, the correct options are "C and B"
please help me fast!!
Answer:
they are not living because when they fell from the tree they stopped getting water. so it depends on how long ago they fell.
Answer:
I would agree that the leaves that have fallen are dead. I agree because it is a proven fact that, when a leaf is not conected to a tree it will die because it is not geting protens or food from the tree anymore.
Explanation:
MARK AS BRAINLISTEvery chemical compound is unique and different from the
what are the number of birds in the world.
Explanation:
The number is up to 200 to 400 billion individual birds.
ASAP I need help! I’ll mark you brainly!
Answer:
ATP and NADPH are used to energy for the production of the Calvin cycle. Once their energy is released, they revert back to ADP and NADP+ and can be reused again.
Explanation:
ATP and NADPH are energy carriers that can be used to power chemical reactions. Once they have energized cellular processes, they become their 'low energy' form of ADP and NADP+. Later, they can reform ATP and NADPH to power more reactions
During winter vacation, you learn that a polar jet stream is traveling across the United States. The forecaster says there will be big changes in the
weather as the jet stream moves past your town in Florida
What causes wind? Choose the two that apply.
<
A
uneven heating of Earth's surface
B В
warm air sinking while cold air rises
C
air movement from high to low pressure
D
air movement from low to high pressure
Explanation:
uneven heating of Earth's surface. warm air sinking while cold air rises
Our model includes the fact that as whales dive deep and then come back
to the ocean surface the whales help phytoplankton to move to the
surface' they phytoplankton can use sunlight near the surface to do
photosynthesis.(whales need to come to the surface to breathe air, they
cannot get oxygen from water- they are mammals, not fish!). Explain why
this is important for decreasing the amount of carbon dioxide in the
atmosphere and helps slow climate change.
Answer:
They are known as primary producers of the ocean—the organisms that form the ... Like land plants, they take up carbon dioxide, make carbohydrates using light ... Because they need light, phytoplankton live near the surface, where enough ... toxins that cause can cause illness or death among humans and even whales ...
Explanation:
Does anyone know all the answers???
Answer:
no sorry
Explanation:
