1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lorico [155]
3 years ago
10

What do you think caused dinosaurs to become extinct.

Social Studies
2 answers:
Orlov [11]3 years ago
8 0

The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many years, paleontologists believed this event was caused by climate and geological changes that interrupted the dinosaurs’ food supply. However, in the 1980s, father-and-son scientists Luis (1911-88) and Walter Alvarez (1940-) discovered in the geological record a distinct layer of iridium–an element found in abundance only in space–that corresponds to the precise time the dinosaurs died. This suggests that a comet, asteroid or meteor impact event may have caused the extinction of the dinosaurs. In the 1990s, scientists located the massive Chicxulub Crater at the tip of Mexico’s Yucatán Peninsula, which dates to the period in question.

Dinosaurs roamed the earth for 160 million years until their sudden demise some 65.5 million years ago, in an event now known as the Cretaceous-Tertiary, or K-T, extinction event. (“K” is the abbreviation for Cretaceous, which is associated with the German word “Kreidezeit.”) Besides dinosaurs, many other species of mammals, amphibians and plants died out at the same time. Over the years, paleontologists have proposed several theories for this extensive die-off. One early theory was that small mammals ate dinosaur eggs, thereby reducing the dinosaur population until it became unsustainable. Another theory was that dinosaurs’ bodies became too big to be operated by their small brains. Some scientists believed a great plague decimated the dinosaur population and then spread to the animals that feasted on their carcasses. Starvation was another possibility: Large dinosaurs required vast amounts of food and could have stripped bare all the vegetation in their habitat. But many of these theories are easily dismissed. If dinosaurs’ brains were too small to be adaptive, they would not have flourished for 160 million years. Also, plants do not have brains nor do they suffer from the same diseases as animals, so their simultaneous extinction makes these theories less plausible.

antoniya [11.8K]3 years ago
5 0
When the asteroid hit the earth, the dust cloud covered the sun making it impossible for light to go to the ground, the animals, and plants couldn’t photosynthesize. That made an ice age type of earth with no sunlight. hope that helped
You might be interested in
Make sentences of Government, Education, Poultry, Garment industry, Population
77julia77 [94]

  1. India is a democratic <u>government</u><u> </u><u>.</u>
  2. <u>Education</u> is very important for bright future.
  3. Cattle, sheep, pigs and <u>poultry</u> are reared.
  4. My uncle works in <u>Garment</u><u> </u><u>Industry</u><u>.</u>
  5. India <u>population</u><u> </u> is more than pakistan.
3 0
3 years ago
Read 2 more answers
What is important about the case Flores v Arizona? <br> What was the outcome?
gizmo_the_mogwai [7]

Answer:

On March 13, 2006, the District Court ruled that the $21 million in daily fines that had accumulated should be distributed to school districts and again ruled that ELL pupils should not be subject to the AIMS graduation requirement until an appropriate funding scheme could be implemented.Aug

4 0
2 years ago
Which topic is often used as a theme for studying world history since world war 1
Lelu [443]

Decolonization and Nationalism

5 0
3 years ago
Read 2 more answers
Why was the Freedmen’s Bureau abolished?
Elza [17]

Answer:

Due to pressure from white Southerners, Congress dissolved the Bureau of Liberals in 1872. The Bureau failed to make real progress toward racial equality mainly due to wars between Congress. and the President, as well as funding from subordinates.ㄒɦĄŊĸ ĦØφĒ ĮŤ ɧėŁP ♡✧♡

Explanation:

4 0
3 years ago
Read 2 more answers
​ACST University is well known for the wide array of courses it offers. It offers courses in fine arts, humanities, science, and
Varvara68 [4.7K]

Answer:departmentalization

Explanation:Departmentalization is defined as a process that groups activities into different departments. These departments are created so that tasks can be performed by specialization within the organization.

Departmentalization also refers to an organization’s formal structure that includes several departments and positions and their respective relationship with each other.

4 0
3 years ago
Other questions:
  • major cities in the western us are most likely to be older than major cities on the atlantic coast true or false
    7·2 answers
  • Results from a research study suggest that a stop-smoking program is very successful. However, the participants who volunteered
    14·1 answer
  • ANSWER WHAT YOU CAN PLZ
    6·1 answer
  • What's hellinistic culture??
    5·1 answer
  • Later Christian leaders attributed one of the four Gospels to Matthew because of the statements of which earlier, second century
    5·1 answer
  • The U.S Consitution outlines certain rights for American citizens but the government sometimes limits these right?​
    13·1 answer
  • How did President Washington handle the Whiskey Rebellion?
    8·1 answer
  • In general, people do not like to suffer, work hard, or make sacrifices. If and when they do these things, they want to feel tha
    5·1 answer
  • What is bill in social?​
    14·1 answer
  • What is the purpose of the Monticello exhibit at the Smithsonian
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!