a massive extinction of about 50% of marine animals occurred at the end of the mesozoic era. what most likely caused this extinction?

Answers

Answer 1

Answer:

Explanation:

The scientific consensus is that the causes of extinction were elevated temperatures and widespread oceanic anoxia and ocean acidification due to the large amounts of carbon dioxide that were emitted by the eruption of the Siberian Traps.


Related Questions

in the late 1800s, china experienced an internal crisis when emperor guang xu launched massive reforms throughout the nation. why were these reforms opposed, thus creating an internal crisis in china?

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Note that in the late 1800s, China experienced an internal crisis when emperor Guang Xu launched massive reforms throughout the nation. It is to be noted that these reforms were opposed and hence caused internal crises because: "Some people felt reforms would ruin the Chinese economy." (Option A)

How did the crises erupt?

Among many persons, Prince Duan, a late Qing dynasty stateman, was the most vocal in his opposition to the changes. Prince Duan had resisted the changes because he felt a foreign scheme was at work, with many Western concepts, including military tactics, education, and political methods, being proposed for implementation, and he was threatening to deport all foreigners from China.

As a result, they executed and imprisoned all reform supporters and held King Guang Xu under house arrest until his death.

According to some historians, Emperor Guang Xu was the first Chinese ruler to pursue modernizing reforms and capitalism. Imperial power in the Qing dynasty reached a low under Guangxu, and he was the first Qing emperor to be imprisoned during his own reign.

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The goal in choosing vocabulary words is to focus on words that will be _______________ to the children.

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Answer:

teach I give this answer because if we will teach the children the words we will repeat it again and again then the children will repeat it again and again and our mind

fix it

An unanswered constitutional question about the judicial branch involves brainly.

Answers

I don’t really know I just need points to get answers

A software developer wants to add a new feature to an existing application operating in the cloud, but only wants to pay for the computing time the code actually uses when it is called.

Answers

Answer:aye bro answer my question

Explanation:

What happens when the barrel goes over the waterfall?.

Answers

the barrel will crash down

Using the following vocabulary, describe in spanish what you do in your spare time. Write two sentences in spanish. Después de los fines de semana los lunes/martes/miércoles/jueves/viernes voy.

Answers

The examples in Spanish are listed below:

Después de los fines de semana yo voy los lunes y el martes al centro comercial a ver las novedades de los almacenes.Después de los fines de semana yo voy los miércoles en la noche a leer con tres amigos libros de literatura alemana.

Procedure - Sentences in SpanishGrammatical structure

In this question we must build two sentences in Spanish in which we talk about hobbies and which follow this grammatical construction:

Después de los fines de semana + pronoun + verb + complement

Examples in Spanish (Results)

Now we proceed to present two examples of sentences in Spanish:

Después de los fines de semana yo voy los lunes y el martes al centro comercial a ver las novedades de los almacenes.Después de los fines de semana yo voy los miércoles en la noche a leer con tres amigos libros de literatura alemana.

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Which item(s) will require a journal entry to update the balance in the cash account?.

Answers

Examples of items requiring a journal entry as the result of the bank reconciliation include:

Bank service charges which are often shown on the last day of the bank statement. ...

Check printing charges.

Customer checks that were deposited but are now returned as NSF (not sufficient funds)

Bank fees for returned checks.

A researcher wants to conduct a study to see if playing chess improves memory. The researcher finds 50 individuals who play chess regularly and 50 that do not. Each of the 100 individuals are given a questionnaire designed to determine memory level. If the 100 individuals did not know they were participating in the study, which statement about the study is correct?.

Answers

Answer:

This is an observational study

Explanation:

just took the test

Nadia bought 4. 3 pounds of ham on tuesday and 1. 7 pounds of ham on wednesday. She spent a total of $41. 94. What was the price of the ham per pound?.

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The price of ham per pound is $6.99 per pound.

Which of the following best describes the sources that contribute to your online identity.

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Statement that describes the difference that exists between an online identity and a real-life one is Online identities are more flexible.

Online identities can be regarded as the identity that is been presented on the internet and this is usually different from the real life identity.

This is because on internet different means can be used to have fake identity and this is different from real world.

We can conclude that difference between online identity and a real-life one is flexibility.

CHECK THE COMPLETE RELATED QUESTION BELOW;

What BEST describes the difference between an online identity and a real-life one?

Online identities are decided for you.

Online identities are short-lived.

Online identities are more flexible.

Online identities are forced on you

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If $535 is invested at an interest rate of 6% per year and is compounded continuously, how much will the investment be worth in 10 years? use the continuous compound interest formula: a = pert $1307. 12 $974. 83 $973. 38 $403. 43.

Answers

The Amount of investment equals $974.83.

The continuous compound interest helps to calculate an investment that are reinvested into the balance over a infinite number of periods.

The formula for continuous compound interest is A=P^e^(r*t)

Amount of investment = $535 * e^(6%*10)

Amount of investment = $535 * 1.82211880039

Amount of investment = $974.833558209

Amount of investment = $974.83

Therefore, the Option B is correct since the Amount of investment equals $974.83.

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Which method did europeans use to try to find the lake guatavita's mythical treasure? draining diving panning magnets.

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The method Europeans uses to try to find lake Guatavita's mythical treasure was draining. The Lake Guatavita is a mystic, circle of water.

Lake Guatavita is a mystic and famous lake due to 'The Legend of El Dorado'.

According to the legend, this Lake (Lake Guatavita) contained treasures in its deep waters.

In this regard, it has been supposed that Europeans lowered (drained) the level of the Lake to find many pieces of gold.

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Answer:

A) draining

Explanation:

ez claps

Lily needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 3. 5 hours and charged her $159 for parts. The total was $456. 50. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

Answers

Answer
x = 59.5
Explanation
Based on the given conditions, formulate:
Rearrange unknown terms to the left side of the equation:
Calculate the sum or difference:
Divide both sides of the equation by the coefficient of variable:
Calculate the product or quotient x = :59.5
Answer x = 59.5

When earth and the moon are separated by a distance of.

Answers

Answer:

3.84x10^8 meters probably

Dwight creates a table of values for a function and plots the points. He finds that one y value divided by the next y value produces the same answer each time. What kind of function did he graph?.

Answers

Answer:Liner
I Hope This Helps

An mg2+ ion has the same electron configuration as.

Answers

Yes, the Mg2+ ion and the neutral neon atom are called isoelectronic

What does the image of "a huge mountain ‘tween my heart and tongue" suggest about the meaning of this passage? portia does not want lucius to find out that she is in love. Portia fears her own thoughts and wishes they would stop. Portia is not sure if lucius can be trusted with the errand. Portia does not want to say what she is feeling.

Answers

Answer: d. Portia does not want to say what she is feeling.

Explanation:

I got it right

Question:

What does the image of "a huge mountain ‘tween my heart and tongue” suggest about the meaning of this passage?

-Portia does not want Lucius to find out that she is in love.

-Portia misses the freedom to enjoy being out in nature.

-Portia knows that Lucius is one of the conspirators.

- Portia wishes for help to keep from saying what she knows and feels.

Answer:

Portia wishes for help to keep from saying what she knows and feels. -D

Explanation:

Just did it!

President theodore roosevelt speak softly and carry a big stick'' foreign policy was based on brainly.

Answers

Diplomacy and influence

A zookeeper predicted that the weight of a newborn lion would be 2. 8 pounds. When the zoo’s lion gave birth, the newborn weighed 3. 5 pounds. What is the zookeeper’s percent error? round to the nearest percent.

Answers

20% would probably be the right answer

Lorena and julio purchased a home for $205,950. Their loan amount was $164,760, and the assessed value is now $200,500. Their tax rate is 1. 5%. How much will their monthly taxes be?.

Answers

Answer $9579
I Hope This Helps

Why is it important for all the phases of growth and reproduction to proceed correctly in order for a plant species to survive?

Answers

Explanation:

Reproduction produces offspring.

All organisms reproduce. If they didn't, no species would survive past a single generation. Reproduction allows organisms to pass their traits, or characteristics, to their offspring. Parents pass on their traits through their genetic material, or DNA.

These questions are so hard to answer. Please help!

Answers

Answer:

i think B

Explanation:

If the code for cabbage is dzcabff, what is the code for knight.

Answers

Substitution cipher has to do with the replacement of letters of the alphabet in different iterations so that it would be difficult to understand for anybody who does not know the cipher key.

Based on your given question, there is no cipher key given to help to break the code which was given, so there is very little that can be done on my part unless you seek the help of a professional cryptologist or code breaker.

Please note that your question is incomplete so I gave you a general overview so that you could get a better understanding of the concept.

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What is 3x3 – 11x2 – 26x + 30 divided by x – 5? 3x2 – 4x + 6 3x2 + 4x – 6 3x2 + 26x + 8 3x2 – 26x + 8.

Answers

First question answer is -26x + 17
x - 5

A rock gym charges $5 to rent equipment and $2 per hour to climb. Logan spent $9. 50. How many hours did he spend climbing?.

Answers

the answer is 2.25 hours, or 2 hours and 25 minutes.
9.50-5=4.50
4.50/2=2.25

Which principal energy level of an atom contains an electron with the lowest energy?.

Answers

I think the answer to this is an s orbital

Match each sentence with the appropriate purpose for writing.

Answers

Answer:

Where are the pictures? I would like to help you.

a player pays $15 to play a game in which a chip is randomly selected from a bag of chips. the bag contains 10 red chips, 4 blue chips, and 6 yellow chips. the player wins $5 if a red chip is selected, $10 if a blue chip is selected, and $20 if a yellow chip is selected. let the random variable x represent the amount won from the selection of the chip, and let the random variable w represent the total amount won, where w=x−15. what is the mean of w ?

Answers

The mean of w which represents the total amount won where w = x + 15 is;

w = -$4.5

We are given;

Winnings if a red chip is selected; x₁ = $5.

Now, there are 10 red chips in a bag of 20 chips.

Thus, the probability of this outcome is:

p₁ = 10/20

p₁ = 1/2

Winnings if a blue chip is selected; x₂ = $10

Now, there are 4 blue chips in a bag of 20 chips.

Thus, the probability of this outcome is:

p₂ = 4/20

p₂ = 1/5

Winnings if a yellow chip is selected; x₃ = $20

Now, there are 6 blue chips in a bag of 20 chips.

Thus, the probability of this outcome is:

p₃ = 6/20

p₃ = 3/10

Finally, the expected value is:

E(X) = 5(¹/₂) + 10(¹/₅) + 20(³/₁₀)

E(X) = $10.5

We are told that w = x - 15

where x is the amount won from selection of chip which is E(X) = $10.5

Thus;

w = 10.5 - 15

w = -$4.5

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A syringe contains 0. 65 moles of he gas that occupy 850. 0 ml. What volume (in l) of gas will the syringe hold if 0. 35 moles of ne is added?.

Answers

Answer:

im sorry

Explanation:

(not really we will never meet in person)

Hemophilia is an x-linked recessive disorder. A punnett square is shown. The columns are labeled upper x h and upper y. The rows are labeled x upper h and x h. What is the probability of the offspring having hemophilia for the cross that is shown in the punnett square? 0 percent 25 percent 50 percent 75 percent.

Answers

Answer:

50% (C)

Explanation:

The cross displayed in the Punnett square has a 50% chance of having hemophilia. The correct option is C.

What is hemophilia?

An genetic bleeding ailment called haemophilia causes the blood to clot improperly. This may result in both spontaneous bleeding and bleeding after injury or surgery. Blood contains a variety of clotting proteins that can aid in halting bleeding.

The term "X-linked recessive disorder" refers to a genetic condition caused by the coexistence of two recessive alleles on the female X chromosome and one recessive allele on the male X chromosome.

Here, in this Punnett square [tex]X^hX^h[/tex], and  [tex]X^hX^[/tex] are hemophilic individuals, while [tex]X^HX^h[/tex], the female is a carrier.

Thus, the correct option is C.

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