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.
Statistical analysis of the fossil record indicates somewhere around 35% of all species disappeared at the end of the cretaceous. (There is considerable margin for error in that figure--we don't have a good estimate for the number of species that exist today, even). http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Tertiary_extinction_event
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. -------------------------------------------
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.
what are the three broad families of theories?
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.
because they are from the age of the dinosaurs. their name comes from the greek phrase meaning "three eyes"
cactus
boobies*dinosaurs=your mom
Three dinosaurs are known from New Jersey: Diplotomodon, Dryptosaurus, Hadrosaurus.
The three mass extinctions referred to are the Permian-Triassic extinction about 252 million years ago, the Triassic-Jurassic extinction about 201 million years ago, and the Cretaceous-Paleogene extinction about 66 million years ago.
There are three main theories of how the moon came into existence. The theories are as follows: the moon was captured by Earth's gravitational pull, the moon was originally part of the earth's crust, or the earth and moon formed together out of the primordial nebula.