Nature constantly adjusts the atmospheric carbon level. An increase in the level causes the atmosphere to hold more heat, which causes more water to evaporate from the oceans, which causes increased rain. Rain washes some carbon from the air into the oceans, where it eventually becomes part of the seabed. A decrease in atmospheric carbon causes the atmosphere to hold less heat, which causes decreased evaporation from the oceans, which causes less rain, and thus less carbon is washed into the oceans. Yet some environmentalists worry that burning fossil fuels may raise atmospheric carbon to a dangerous level. It is true that a sustained increase would threaten human life. But the environmentalists should relax—nature will continually adjust the carbon level.

Which one of the following, if true, would most weaken the argument in the passage?

(A) Plant life cannot survive without atmospheric carbon.
(B) It is not clear that breathing excess carbon in the atmosphere will have a negative effect on human life.
(C) Carbon is part of the chemical "blanket" that keeps the Earth warm enough to sustain human life.
(D) Breathing by animals releases almost 30 times as much carbon as does the burning of fossil fuels.
(E) The natural adjustment process, which occurs over millions of years, allows wide fluctuations in the carbon level in the short term.

Answers

Answer 1

Answer: E) The natural adjustment process, which occurs over millions of years, allows wide fluctuations in the carbon level in the short term.

Explanation:

If the natural adjustment process takes millions of years then it nature will not be able to adjust the levels of carbon in the atmosphere fast enough. This means that in the short term, carbon levels will fluctuate widely if more fossil fuels are burnt.

It is therefore necessary that humans reduce how much fossil fuels that burn to ensure that in the short term, situations on earth are manageable while the adjustment process goes on for millions of years.


Related Questions

help pls *serious ppl only*

Answers

Answer:

6 for white parents, and 6 for black parents.

Which organism would be the least affected by the toxic mercury?

a)zooplankton
b)small fish
c)larger fish
d)shark

Answers

Answer:

Zooplankton(A)

Explanation:

Because the toxic mercury builds up in the bigger organsims

Mutations in certain genes of bacteria cause them to be resistant to powerful antibiotics. What type of mutation is this for the bacteria?

Answers

Answer:

It is a beneficial mutation.

Explanation:

It helps the bacteria fight the antibiotics and stay in the system for a longer amount of time.

What kind of symmetry does the human body plan show? Explain what this means.

Answers

The last type of symmetry is the bilateral symmetry. Bilateral symmetry is when the body plan can be divided along a plane that splits the animal's body into right and left sides that are mirror images of each other. Let's look at this type of symmetry a little more.

The volume of air in the lungs is controlled by the​

Answers

The diaphragm,

During inhalation, the diaphragm is contracted which increases the volume of the lung cavity. During exhalation, the diaphragm is relaxed which decreases the volume of the lung cavity

PLEASE HELP!!! WIL GIVE BRAINLIEST
The following leaf, with edges that appear burnt, was observed on an impatiens plant.

Which mineral is this impatiens likely deficient in?
a. phosphorus
B calcium
C potassium
D sulphur

Answers

I have no ideas but maybe it is B?

I need to know what which weathering it is

Answers

Answer:

the answer is D

Explanation:

Rocks break down into smaller pieces through weathering. Rocks and sediment grinding against each other wear away surfaces. This type of weathering is called abrasion, and it happens as wind and water rush over rocks. The rocks become smoother as rough and jagged edges break off.

I just need number one I need to fill in the blanks

Answers

Is there a word bank we can use

Adenine bonds with
Your answer

Answers

Answer:

I hope it's true

Explanation:

Adenine bonds with thymine, and guanine bonds with cytosine.

bye!

Which of the following scientists DID NOT disprove spontaneous generation? *
Pasteur
Hooke
Redi
Spallanzani

Answers

Hooke didnt disprove spontaneous generations!

Which conclusion is best supported by his observations?

Answers

Answer:  

The answer would be d finch 4 is adapted to eat small insects that live in tiny holes.

Explanation:

Climate zones result in specific vegetation types developing in a region. Which
climatic region is hot and wet all year round, resulting in tropical rainforest Vegetation?​

Answers

Tropical wet and dry climate is typically observed within the tropics. The tropics are two lines of latitude at 23.5° north and 23.5° south of the Equator. Land within this area obtains direct sunlight throughout most of the year.

how the skin cells, neurons, muscle cells, and blood cells you have observed relate to the functions of skin, nerve, muscle, and blood tissue?

Answers

Answer:

All the type of cels perform different kind of functions that are specific to them.

Explanation:

Every cell has its own work to do but different cells may have different functions in multicellular organisms, cell with the same type of job often work together.

These groups of specialized cells from tissue in turn, the tissue often group together to form larger units called organs the heart is an organ; so is the stomach.

PLEASE HELP BRAINLIST GIVER HERE PLEASE HELPPPPPPPPPPP

Which of the following terms means "manmade"?
anthropology
naturopology
is anthropogenic
naturogenic

Answers

Answer:

Anthropology

Explanation:

this is the answer hope it helps you

1. Unit of hereditary information
2. Trait that will appear on the offspring, represented by
capital letter
3. Trait that will not appear on the offspring, represented by
small letter
4. An Austrian monk who discovered that traits can be passed
from parents to offspring.
5. Genetic makeup of an individual.
6. Physical trait or observable trait of an individual,
7. Genotype composed of similar alleles. Ex. RR-round
8. Different forms or pairs of genes.
9. Genotype composed of dominant and recessive alleles. Ex
Rr
10. It occurs when both alleles are present in an organism.
Ex. BB (black chicken) x WW (white chicken) = BW = black
and white chicken,



Nonsense report, pls pa answer brainliest ko po agad

Answers

Answer:

1. Gene

2. Dominant Allele

3. Recessive allele

4. Gregor Mendel

5. Genotype

6. Phenotype

7. Search up net, it won't let me upload the anwer

8. Diploid

9. Heterozygous

10. -

Explanation:

Pls vote  as brainliest

¿Como se llaman las celulas segun el organo en el que estan?

Answers

Answer:

es tejido ... 2 ... es la ... opción correcta ...

Un grupo de células que tienen un origen común, una estructura similar y que realizan una función definida se denomina tejido. ... Por ejemplo, grupos de células óseas forman tejidos óseos y las células musculares forman tejido muscular. espero que te ayude

what is substances in scientific methods​

Answers

Answer:

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.

When a cell is deprived of oxygen, its lysosomes tend to burst and release their contents into the cell. As a result of this, that cell will Group of answer choices undergo cell division. recycle damaged organelles. produce replacement lysosomes. undergo self-digestion and die.

Answers

Answer:

The correct answer is - undergo self-digestion and die.

Explanation:

Lysosomes are cell organelle that is membrane-bound and has digestive enzymes in them. These cell organelle help in digesting cells that are worn out, ruptured cells deprived of oxygen by bursting themselves.

Its bursting nature also helps in digesting and killing antigens and microbes. It is a very essential cell organelle that helps in digesting and killing damage cell parts or cells.

When a cell is deprived of oxygen, its lysosomes tend to burst and release their contents into the cell, the cell will undergo self-digestion and die.

Explanation:

Lysosomes are cell organelles that are membrane-bound and contains digestive enzymes. These cell organelle help in breaking down cellular waste.  When the cell is deprived of oxygen they burst themselves and release their content. It is a very essential cell organelle that helps in digesting and killing damaged cell parts, microbes, antigens, or cells.

So, from this we can conclude that when a cell is deprived of oxygen, its lysosomes tend to burst and release their contents into the cell, the cell will undergo self-digestion and die.

learn more about lysosomes here:

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Cell Processes and Transport: Mastery Test
4
Select the correct answer from each drop-down menu.
Sodium and potassium lons are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains
energy by the breaking of
. This action requires the expense of energy. So, sodium and potassium ions are transported using
Reset
Next

Answers

Answer:

Cell

Explanation:

Sodium and potassium ions are essential for muscle contractions of the heart, and the ions are transported using a pump, which obtains energy from the breaking of ATP molecules, this action requires the expenditure of energy, so sodium and potassium ions are transported using active transport.

What is muscle contraction?

Sodium and potassium ions play a crucial role in muscle contractions, including those of the heart, and to maintain the appropriate concentration of these ions inside and outside the cell, the body uses a protein pump called the sodium-potassium pump, which is an active pump. It requires energy to move substances across cell membranes; the pump uses the energy released by the breakdown of ATP molecules to change its shape, transport the sodium and potassium ions across the membrane, and regulate the muscle contraction.

Hence, the ions are transported using a pump, which obtains energy from the breaking of ATP molecules, this action requires the expenditure of energy, so sodium and potassium ions are transported using active transport.

Learn more about the muscle contraction here.

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question is incomplete, complete question is below

Select the correct answer from each drop-down menu.

Sodium and potassium ions are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains energy by the breaking of ----. This action requires the expense of energy. So, sodium and potassium ions are transported using---

ATP,

active transport.

Can someone help me with this for a brainly?

Answers

Reproduction is the second ability.


Buying a house is most likely a long-term goal for a person of which of these
ages?
A. 57 years old
B. 67 years old
C. 77 years old
O D. 17 years old

Answers

buying a house is most likely a long term goal for D . 17 years old

6. Because they are embedded within the membrane, ion channels are examples of ________. receptor proteins integral proteins peripheral proteins glycoproteins 7. The diffusion of substances within a solution tends to move those substances ________ their ________ gradient. up; electrical up; electrochemical down; pressure down; concentration 8. Ion pumps and phagocytosis are both examples of ________. endocytosis passive transport active transport facilitated diffusion 9. Choose the answer that best completes the following analogy: Diffusion is to ________ as endocytosis is to ________. filtration; phagocytosis osmosis; pinocytosis solutes; fluid gradient; chemical energy

Answers

Answer:

6. integral proteins

7. down; concentration

8. active transport

9. osmosis; pinocytosis

Explanation:

An integral protein is a protein that is permanently attached to a biological membrane. Some examples of integral membrane proteins include, for example, the insulin receptor, cell adhesion proteins (e.g., integrins), glucose permease, etc. Diffusion, also known as passive transport, refers to the process by which a substance/molecule tends to move from an area of high concentration to an area of low concentration. Moreover, osmosis is a type of diffusion by which a solvent (e.g., water) moves across a semipermeable membrane from a region of lower concentration to a region of higher concentration. Active transport refers to the movement of molecules/substances across a biological membrane against a concentration gradient. There are two types of active transport: primary active transport and secondary active transport. The primary active transport depends on a source of energy (e.g., ATP) for movement, whereas secondary active transport depends on electrochemical gradients to transport substances with the help of membrane transport proteins (i.e., cotransporters). Active transport involves ATP pumps that move ions into and out of the cell. Finally, endocytosis is the process by which cells absorb external material by engulfing them in transport vesicles, whereas pinocytosis refers to a type of endocytosis ​involving fluids that contain many solutes.

Which of the following best describes daily temperatures in deserts?a. hot during the day and cold at night b. hot during the day and warm at night cool during the day and very cold at night d. they depend upon the type of desert and its location Please select the best answer from the choices provided

Answers

a would be the best answer out of these choices because it’s closest to hot during the day and cool at night
A. Hot during the day and cool at night

I NEED HELP!!! for living environment

Answers

Answer:

increase in the consumption of fossil fuels lead to all the other answers

Explanation:

increase in the consumption of fossil fuels

I’m sure the correct one is C

Living organisms are made up of energy and matter.

Answers

True every living thing needs energy
Yes I am going back home to go get back home

What environmental condition contributed to the heat wave experienced in Europe and the thousands of deaths in France? a. polluted water b. sewage c. air pollution d. a and b

Answers

Answer: c. Air pollution

Explanation:

There was a heatwave in Europe during the early years of the 21st century that killed tens of thousands across the continent and thousands in France.

Air pollution was blamed for having made the situation worse because the pollutants in the air acted to prevent heat from escaping back into the atmosphere which led to increased heat on ground and therefore a heat wave.

Answer:

C

Explanation:

name of a gland which act as mixed gland __

Answers

Answer:

PANCREATIC ISLETS

Explanation:

Since the pancreas has both endocrine and exocrine functions, it is therefore a mixed gland. Its endocrine secretions are the hormones insulin and glucagon

Pancreas is a heterocrine gland as it acts both as endocrine and exocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.
Hence, pancreas is a mixed gland.
So, the correct answer is 'Pancreas'.

One DNA molecule wound around molecules of protein makes up a(n).
o
A. tetrad
B. allele
O C. chromosome
O D. gamete

Pls help

Answers

Answer:

C. chromosome

Explanation:

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

This fly has 14 chromosomes in its cells.7 maternal chromosomes and 7 paternal chromosomes.Assume you are a microscopist viewing this fly cells that are undergoing meiosis. Conclude the number of chromosomes/chromatids at the end of meiosis 1 as well at the end of meiosis 2. please answer!!!!!

Answers

Answer:

23 pairs in meiosis 1 and 23 numbers in meiosis 2.

Explanation:

There are diploid number of chromosomes means double number of chromosomes at the end of meiosis 1 while on the other hand, at the end of meiosis 2, there are haploid number of chromosome means half number of chromosomes in each daughter cell. In humans meiosis 1, there are 23 pairs of chromosomes that is diploid in nature but in the end of meiosis 2, there are only 23 chromosomes in each daughter cell which is haploid in nature.

Describe & explain why the effect of temperature as a
limiting factor for photosynthesis is different to the
effects of Co2 and light intensity.​

Answers

Answer:

Although  the  light  dependent  reactions  of photosynthesis     are    not     affected     by changes in temperature, the light independent   reactions  of   photosynthesis are dependent  on  temperature.  They  are reactions  catalysed  by  enzymes.  As  the enzymes approach their optimum temperatures  the  overall  rate  increases.  It approximately   doubles   for   every   10°C increase    in    temperature.    Above    the optimum  temperature  the  rate  begins  to decrease, as enzymes are denatured, until it stops.

Explanation:

At  low  light  intensities,  as  light  intensity increases,the  rate of  the  light-dependent reaction,and   therefore   photosynthesis generally, increases proportionately (straight    line    relationship).    The    more photons  of  light  that  fall  on  a  leaf,  the greater     the     number     of     chlorophyll molecules  that  are  ionised  and  the  more ATP   and   NADPH   are   generated.   Lightdependent  reactions  use  light  energy  and so    are    not    affected    by    changes    in temperature.As light intensity is increased further, however, the rate of photosynthesis is eventually  limited by some other factor. So the rate plateaus. At very high light intensity, chlorophyll may be damaged and the rate drops steeply (not shown in the graph).Chlorophyll ais used in both photosystems. The wavelength of light is also important. PSI absorbs energy  most  efficiently  at  700  nm  and  PSII  at  680  nm.  Light  with  a  higher  proportion  of  energy concentrated in these wavelengths will produce a higher rate of photosynthesis.An    increase    in    the    carbon    dioxide concentrationincreases  the  rate  at  which carbon  is  incorporated  into  carbohydrate in  the  light-independent  reaction,  and  so the    rate    of    photosynthesis    generally increases until limited by another factor.As    it    is    normally    present    in    the atmosphere  at  very  low  concentrations (about  0.04%),  increasing  carbon  dioxide concentration  causes  a  rapid  rise  in  the rate  of  photosynthesis,  which  eventually plateaus   when   the   maximum   rate   of fixation is reached.

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