how can we tell that environment is actually changed in the past​

Answers

Answer 1

Answer:

Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.

1) The planet's average surface temperature has risen about 2.05 degrees Fahrenheit (1.14 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere. Most of the warming occurred in the past 40 years, with the six warmest years on record taking place since 2014. Not only was 2016 the warmest year on record, but eight months out of that year — from January through September, with the exception of June — were the warmest on record for those respective months.

2) The ocean has absorbed much of this increased heat, with the top 100 meters (about 328 feet) of ocean showing warming of more than 0.6 degrees Fahrenheit (0.33 degrees Celsius) since 1969. Earth stores 90% of the extra energy in the ocean.

3) The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost an average of 279 billion tons of ice per year between 1993 and 2019, while Antarctica lost about 148 billion tons of ice per year.

4) Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska, and Africa.

5 )Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and the snow is melting earlier.

6) Global sea level rose about 8 inches (20 centimeters) in the last century. The rate in the last two decades, however, is nearly double that of the last century and accelerating slightly every year

7) Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades

8) The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events.

9) Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30%.13,14 This increase is the result of humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the ocean. The ocean has absorbed between 20% and 30% of total anthropogenic carbon dioxide emissions in recent decades (7.2 to 10.8 billion metric tons per year).

Shorter version: 1) Global Temperature Rise

2) Warming Ocean

3) Shrinking Ice Sheets

4) Glacial Retreat

5) Decreased Snow Cover

6) Sea Level Rise

7) Declining Arctic Sea Ice

8) Extreme Events

9) Ocean Acidification

Answer 2
Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.

Related Questions

How are a liquid's properties similar to a solid's properties?

(asap)

Answers

Answer:

Liquids share some properties with solids – both are considered the condensed matter and are relatively incompressible – and some with gases, such as their ability to flow and take the shape of their container.

Explanation: Have a Blessed day!!!!!!

what is 13×3÷4=
100 ÷14+63 =​

Answers

Answer:

1. 13×3÷4 = 9.75

2. 100÷14+63 =​ 70.1

Explanation:

Just used a caculator on google

Maria collected the gas given off by a glowing piece of charcoal. The gas was then bubbled through a small amount of colorless limewater. Part of Maria's report stated , "After the gas was put into the jar, the limewater gradually changed to a milky white color." This statement is

Answers

The question is incomplete, the complete question is;

Maria collected the gas given off by a glowing piece of charcoal. The Gas was then bubbled through a small amount of colorless limewater. Part of Maria's report stated, "After the gas was put into the jar, the limewater gradually changed to a milky white color." This statement is

An observation

A conclusion

A generalization

A hypothesis

Answer:

An observation

Explanation:

The statement; "After the gas was put into the jar, the limewater gradually changed to a milky white color." is an observation.

A observation rs to any event that occurs immediately after a particular chemical/ physical test is performed.

In this case, the test is that the gas was put into a jar containing limewater and an observation was made immediately

What is the process by which food produced in
photosynthesis is transported from the leaves to
the growing regions of plants and storage
organs?

Answers

Answer:

Translocation

Explanation:

Biosynthesis of carbohydrates in green plants is called photosynthesis. This proces uses inorganic carbon (CO2), water and solar energy in a complex, multi-step process in mesophyll cells of leaves (sources).

Afterward,  plants optimize the reaction products for use or storage in other regions. Plants form sucrose, as an energy-efficient storage molecule for transportation and later storage.

Sucrose contains more energy than the monomer, glucoseSucrose is a highly stable non-reducing sugar- it is non-reactive.

These sugars move through the mesophyll via plasmodesmata;  here, they reach phloem sieve tube elements in vascular bundles. From the STEs, they  are actively transported against their concentration gradient  to the phloem.

When the sugars enter the phloem,  their high concentration cause water to move into the phloem from neighboring xylem vessel. This increases the water pressure inside the phloem, causing the sap to move towards sinks. Sinks may be actively growing regions or storage like the roots.  There, the sucrose is polymerized into starch for long term storage.

can you plzzz help me?!! and hurry plz? it's biology

thank you!!!

Answers

D Hope that helps!!!

Answer:

D

Explanation:

Type the correct answer in the box. Spell all words correctly.
Rachel is a forensic investigator. She checks for lividity in the body of a dead victim. What does she know about the cause of lividity?
Rachel knows that
causes the blood to pool to the parts of the body closest to the ground after death.

Answers

Answer:

The answer is Gravity my guy

Explanation:

Finished my Forensics semester with a 98% and I'm currently studying to be a Forensic Anthropologist.

Gravity is the cause of lividity, which causes the blood to collect in the bodily parts closest to the ground when a person dies.

What is lividity?

The process through which the body's blood ceases flowing after death as the heart stops pumping is known as livor mortis.

Gravity causes the blood to start settling to the lowest portions of the body, where it congeals and stays even if the body is moved.

Rachel is aware that when someone dies, the blood tends to collect in the body parts that are closest to the ground.

The bodily parts that are closest to the ground or a surface when someone dies are considered to be the lowest portions. The dead person now becomes pale, and the lividity region turns purple or reddish-purple.

Therefore, gravity causes the blood to start settling into the lowest portions of the body.

Learn more about the lividity, here:

https://brainly.com/question/13081707

#SPJ2

In which part of a chloroplast are photosystems located? A. The stroma B. Thylakoid membranes c. Outer membrane D. ATP synthase

Answers

Answer: the answer is B. Thylakoid membranes


The Southern Hemisphere experiences the coldest seasonal weather during what portion of the Earth's orbit?

A. When the orbital speed of the Earth is the fastest.

B.During the time when the Earth passes Jupiter

C.When the South Pole tilts away from the Sun.

D.During the time when both hemispheres have a full moon.

Answers

C.When the South Pole tilts away from the sun.

what is the differences between a girl and a guy?

Answers

Answer:

Guys produce different hormones, they have different private parts, and they usually have a different build than girls. They have facial hair

Explanation:

Which of the following statements helps support the endosymbiotic theory?

Answers

I don't see the statements. Can you please comment on this telling me them so I can answer your question properly? Thank you!!

Answer:

Based on my Understanding of Biology.

All Eukaryotic cells have ribosomes

Why do Eukaryotic cells have Ribosomes?

All cells need protein, Ribosomes produce those proteins needed to live. Eukaryotic and Prokaryotic Cells both have Ribosomes.

1. In 1889, August Weismann, a German biologist, conducted an experiment attempting to produce mice
without tails. He cut the tails off adult mice and then allowed them to mate. All offspring had long tails.
He repeated the experiment many times, always with the same results. This experiment helped to
disprove the concept of
a. Inheritance of acquired traits
b. Survival of the fittest
C. Overproduction in a species
d. Struggle for existence

Answers

Answer: inheritance of acquired traits

Explanation: I took the test and aced it so I hope this helped!!

What are proteins that act to speed up chemical reactions?



a.

Enzymes

c.

Glycerol

b.

Amino Acids

d.

Polysaccharides

Answers

Enzymes because they are proteins that act as catalysts within living cells. Catalysts increase the rate at which chemical reactions occur without being consumed or permanently altered themselves.

Hope this helps! Please correct me if I'm wrong :)

What are three structures the cells shown below would have in common?

Bacteria
Archaea
Eukarya

Answers

Answer:

Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.

Explanation:

Answer:

hmmm put the pic closer sir

Explanation:

Which process takes place when the pollen
joins an ovule?

A- pollination

B- maturity

C- Fertilization

D- Germination

Answers

Answer:

D

Explanation:

Germination takes place

AnSWER THIS ASAP!Please

Answers

Answer:

a method of classification of animals and plants according to the proportion of measurable characteristics that they have in common. It is assumed that the higher the proportion of characteristics that two organisms share, the more recently they diverged from a common ancestor.

Explanation:

1 point
8. In the water cycle, the process that takes place between evaporation
and precipitation is called *
A) nitrogen fixation
B) seepage
C) run off
D) condensation

Answers

Answer:

Condensation

Explanation:

a sound of intensity above -- may cause permanent hearing damage

Answers

Answer:

70 decibels and above can cause damage if heard for a long time

120 decibels and above is considered an immediate threat

Explanation:

Which occurs during digestion?

The mouth only allows for physical digestion.
The mouth only allows for chemical digestion.
Chemical digestion prepares the food for physical digestion.
Physical digestion prepares the food for chemical digestion.

Answers

Answer:

Physical digestion prepares the food for chemical digestion.

Answer:

D

Explanation: Physical digestion prepares the food for chemical digestion.

Ao realizar seus experimentos com ervilhas, Mendel cruzou plantas com sementes amarelas e verdes, obtendo, em F1, 100% das plantas com sementes amarelas. Em F2, obteve 75% das plantas com sementes amarelas e 25% de plantas com sementes verdes. Podemos concluir, portanto, que em F1 temos indivíduos

Answers

Answer:

É 100% semelhante ao pai i. e. sementes de cor amarela.

Explicação:

Na F1, 100% das plantas com sementes amarelas. Podemos concluir, portanto, que na F1 temos indivíduos idênticos aos pais porque é 100% semelhante ao pai i masculino. e. sementes de cor amarela. neste experimento, as plantas com sementes amarelas possuem alelo dominante em comparação às plantas com sementes verdes que possuem alelo recessivo, então é por isso que as plantas com sementes amarelas aparecem na geração F1.

Which of the following conditions would lead to a small population size?

Answers

Answer: a, low birth to death ratio

Explanation: immigration adds more population, and when resources are abundant, people do better. a high birth to death ratio would mean more people are being made.

Answer:

a low birth to death ratio

Explanation:

If you have a small amount of people being born, and a high amount of people dying, your population would shrink.

You can have 2,000 born every day in a country, but if 2,500 die every day, that will not help you.

The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called

Answers

Answer:

The cellular process is known as Osmosis

Answer:

Active transport

Explanation:

because it refers to the process where in the molecules are traveling through the membrane from a lower concentration region to a high concentration region.

I hope this help! :)

State the term that makes it difficult to see some of the fish surrounding the corals. [

Answers

Coral reef maybe but I’m not completely sure

Which organizations have pandemic flu preparedness plans?

USAID
State health departments
WHO
CDC

Answers

Answer:who

Explanation:

i got 100

85 °F equals how many °C?
A:20.41
B:20.84
C:21.34
D:41.10.
E:29.44

Answers

Answer:

The answer is E

Explanation:

Hope this helps

Answer:

E:29.44

Explanation:

The answer is E


Since oxygen gas is being released, it can be inferred
that the plant is
A. producing glucose
B. releasing energy from water
C. making protein
D. carrying on active transport

Answers

Answer:

Option A

Explanation:

The answer is option A or "producing glucose." Glucose is a sugar that is a main component for all living organisms because it contains carbohydrates. When oxygen is being released from a plant it means that it's producing glucose which is released through the plants stomata.

Hope this helps.

Since oxygen gas is being released it can be inferred that the plant is PRODUCING GLUCOSE. (Option A).

Photosynthesis is a series of metabolic reactions by which plants and algae use the energy from the sun and carbon dioxide to produce simple carbohydrates (e.g., glucose) and oxygen.

Photosynthesis has two main types of reactions: light-dependent reactions and light-independent reactions (i.e., the Calvin cycle).

During light-independent reactions, carbon-containing molecules such as, for example, glucose molecules, are produced from carbon dioxide.

In conclusion, when oxygen gas is being released it can be inferred that the plant is PRODUCING GLUCOSE (Option A).

Learn more in:

https://brainly.com/question/1388366?referrer=searchResults

what is dental decay?

Answers

Dental decay is when your teeth decay. Your teeth start to rot.
When your teeth rot.

Match the description of an object's motion with the position-time graph that represents at
A. slowing down
B. moving with constant speed
C. not moving
D. speeding up​

Answers

Answer:

1) D

2) C

3) B

Explanation:

1) The position and time increase, speeding up

2) The position and time do not change, therefore it is not moving

3) The position and time are moving, but at a constant speed.

Object's motion with the position-time graph that represents at:

1) D

2) C

3) B

What do you mean by motion of an object?

Motion is the phenomenon in which an object changes its position with respect to time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed.

Moreover, the free movement of a body with respect to time is known as motion. For example-the fan, the dust falling from the carpet, the water that flows from the tap, a ball rolling around, a moving car etc. Even the universe is in continual motion.

Therefore, it is a change of position or orientation of a body with the change of time. Motion along a line or a curve is named translation. Also, the motion that changes the orientation of a body is rotation.

Learn more about motion:

https://brainly.com/question/22810476

#SPJ5

What molecules are inputs in photosynthesis

Answers

The inputs are carbon dioxide from the air and the ATP and NADPH produced by the light reactions. The Calvin cycle uses carbon from the carbon dioxide, energy from the ATP, and high-energy electrons and hydrogen ions from the NADPH.

Water, carbon dioxide, and sunlight-derived energy are the inputs and glucose and oxygen are the products of photosynthesis.

What is photosynthesis?

Plants and other creatures use photosynthesis to transform light energy into chemical energy for cellular respiration and activity.

Photosynthesis draws CO2 and H2O from the air and soil. The plant cell oxidizes water and reduces carbon dioxide. Water turns oxygen and carbon dioxide into glucose.

Photosynthesis stores chemical energy from solar radiation. This process powers most of Earth's life systems.

Learn more about Photosynthesis, here:

https://brainly.com/question/26494694

#SPJ6

Gatorade is a common beverage athletes drink. Gatorade can be made from powdered drink mix and water. In this solution, which is considered the solute?

Answers

Answer:

The solute is powdered drink mix

Explanation:

The solute is powdered drink mix is solute because solute is any substance that dissolves in a solvent while solvent is the substance that dissolve solute or the dissolving medium. When solute dissolve in solvent it is called solution.

Solution is an homogeneous mixture of substance which comprises of solute that dissolve in solvent.

In an ecosystem, energy O A. is mostly lost as heat. B. moves as a circle. C. is eaten by animals. D. is decomposed by fungi. .​

Answers

Answer:

IS EATEN BY ANIMALS

Explanation:

Other Questions
The language in the following sentence appeals to the sense of _____ : He gently picked up the fragment which was extremely lightweight but unbendable.A.touchB.sightC.sound 7 men can dig a canal in 14 weeks. After 2 weeks of work another 7 men joined them in how many weeks more will the work be finished? Steinbeck uses the setting of this chapter to help mirror the opening of the book. In particular, he uses phrases and images that are similar to both: for example [a] water-snake slipped along on the pool, its head held up like a little periscope... (Chapter 1) and [a] water-snake glided smoothly up the pool, twisting its periscope head from side to side... (Chapter 6).Find one other example of this, and use quotes to illustrate the similarity. Why do you think Steinbeck uses this mirroring technique? What most helped to fuel the growth of American imperialism between the Civil War and World War l I need help ASAP please its ELA please and thank you On January 1, Year 1, Vaughan Company purchased equipment for $276,000. Freight charges amounted to $12,000 and there was a cost of $24,000 for building a foundation and installing the equipment. It is estimated that the equipment will have a $60,000 salvage value at the end of its 12-year useful life. Depreciation expense each year using the straight-line method will be:_______.a. $19,700.b. $16,700.c. $14,300.d. $14,000. Find the total surface area of this cuboid Which is the correct way to check your answer for -20d=40?A. -20/40=dB. 40/-20=dC. 40-20=dD. -20d=40 8. A tire dealer sells Supreme tires for $48 each and Prestige tires for $56 each. During one week, the sales for both tires totaled $2008. If 11 Prestige tires were sold, write and solve a linear equation to find the number of Supreme tires sold. hi how yall doiiinnn If DG = 60ft, solve for GO357None of the other answers are correct256 Which is a metamorphic process?A. LithificationB. MeltingC. Meteorite impactD. Weathering a car can accelerate from rest to 70 km/s in 7 seconds. what is the cars average acceleration. show your work how online school? mines/ I dont like it my grades are going down HELPPPP PLEASE PLEASE HELP HELP PLEASE NEED HELP MATH MATH Before the Notre Dame Cathedral was built, other groups used the location for religious purposes. Name three of those groups. I NEED HELPBetty wants to put new cabinets in her kitchen. She measures one side of her kitchen and finds it measures 181818 meters.Which measurement did Betty find?Choose 1 answer:Choose 1 answer:(Choice A)ALength(Choice B)BPerimeter(Choice C)CArea If the function y = xa 31 is a linear function, what is the value of a?A. 1B. 2C. 3D. 4 Which of the following statements best describes why the mass of a bowling ball would not change if it were transported from Earth to the Moon?Gravity is a constant force.The bowling ball will adapt to the changes in gravity.Matter is resistant to acceleration and changes in gravity.The amount of matter in the bowling ball remains the same 2. List 12 things you should consider when buying a used car.