We only know about extinct groups like dinosaurs, ammonites and trilobites through fossils. Some animals and plant are only known to us as fossils. By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other.
Explanation:
b, usually have more benefits than cost.
Answer:
Catastrophism
Explanation:
Catastrophism is the view that Earth has been shaped by a series of random, violent, global-scale events such as meteorite impacts, fast-paced climate change, collisions with other celestial bodies, and large-scale volcanic activity.
Examples of catasrophism are the hypothesis that the moon was formed after the Earth collided with another planet of the size of mars, and the hypothesis that dinosaurs went extinct after the impact of an asteroid in the Gulf of Mexico and the Yucatan Peninsula.
He referred as a group of conditions that seemed to feature mental deterioration beginning in the early life.
Dementia praecox is a form of premature dementia (starts when a person hits puberty versus, this is also a form of schizophrenia).
