The three main theories that explain the extinction of the dinosaurs are the asteroid impact theory, the volcanic activity theory, and the climate change theory. The asteroid impact theory suggests that a massive asteroid struck the Earth, causing a catastrophic event that led to the extinction of the dinosaurs. The volcanic activity theory proposes that intense volcanic eruptions released large amounts of gases and ash into the atmosphere, leading to environmental changes that caused the extinction. The climate change theory suggests that gradual climate changes over millions of years played a significant role in the decline of the dinosaurs.
member of extinct species lacked adaption essential for survival
Lamarck's three theories were the inheritance of acquired characteristics, the use and disuse theory, and the theory of adaptation. His assumptions included the belief that organisms could pass on traits they acquired in their lifetime to their offspring, that these traits were a result of their environment, and that organisms could change over time in response to their environment.
Some animals currently facing extinction include the Sumatran orangutan, Amur leopard, vaquita porpoise, and Javan rhinoceros. These species are threatened by factors such as habitat loss, poaching, climate change, and pollution. Conservation efforts are crucial to prevent their extinction.
Quoth the wikipedia (linked below) -------------------------------------------- The last of the trilobites disappeared in the mass extinction at the end of the Permian about 250 million years ago. -------------------------------------------
Most scientists believe that the Cretaceous extinction event was caused by a 6 mile wide asteroid that impacted Earth at what is now the Yucatan Peninsula 65.5 million years ago. The impact would have thrown tremendous amounts of dust high into the atmosphere, which would have blocked the sun for months. Without sunlight, the plants would have died, and without the plants, so would any herbivorous animals. The carnivores would have then died, too. Another theory popular with scientists is that climate change was the cause of the extinction. Before the asteroid impact, a huge volcanic trap (a large lava flow) called the Deccan Traps had been erupting for about three million years. The amount of carbon dioxide it released into the atmosphere caused tremendous global climate change, and dramatically decreased the variety of dinosaur species. It is also very plausible that it was a combination of these two factors.
The "Age of Dinosaurs" came to an end with the extinction event at the end of the Cretaceous.
nobody really knows. Anything could have happened to that rock in 65.5 million years. Remember that there are also other theories about the K-T extinction event, though, an asteroid impact is by far most widely believed. If it where possible to find that particular rock, it would be a fact, not a theory.
The age of the dinosaurs, known as the Mesozoic Era, spanned approximately 180 million years, from about 252 million to 66 million years ago. It is divided into three periods: the Triassic, Jurassic, and Cretaceous, during which dinosaurs became the dominant terrestrial vertebrates. This era saw the evolution of diverse dinosaur species and significant geological and climatic changes. The age of dinosaurs ended with a mass extinction event, likely caused by an asteroid impact, leading to the extinction of most dinosaur species.
what are the three broad families of theories?
Dinosaurs dominated the Earth during the Mesozoic Era, which lasted from approximately 252 to 66 million years ago. This era is divided into three periods: the Triassic, Jurassic, and Cretaceous. Dinosaurs thrived during these periods, particularly in the Jurassic and Cretaceous, until their extinction at the end of the Cretaceous period, likely due to a combination of volcanic activity and an asteroid impact.
three theories explain this:1.environmental determinism 2.environmental possibilism 3.nature-human theory
the three main theories are : mythi
The three theories of low involvement consumer behavior are the Peripheral Route Theory, the ELM (Elaboration Likelihood Model), and the Heuristic-Systematic Model. These theories explain how consumers make decisions when they are not highly motivated to process information extensively.
The second of the three eras within the Phanerozoic is the Mesozoic Era. It lasted from about 252 to 66 million years ago and is often referred to as the "Age of Reptiles" due to the dominance of dinosaurs during this time. The Mesozoic is divided into three periods: the Triassic, Jurassic, and Cretaceous, each marked by significant geological and biological changes. This era ended with a mass extinction event that led to the demise of the dinosaurs and many other species.
because they are from the age of the dinosaurs. their name comes from the greek phrase meaning "three eyes"
cactus
boobies*dinosaurs=your mom