GENETICS AND EVOLUTION
EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
When organisms changed or evolved
|
|
|
when organisms appeared on Earth
|
|
|
when organisms became extinct
|
|
|
All the above
|
Detailed explanation-1: -Fossils can provide evidence of how life has changed over time, how Earth’s surface has changed, and clues about what past environments were like.
Detailed explanation-2: -The fossil record helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era. It is based on the Law of Superposition which states that in undisturbed rock sequences the bottom layers are older than the top layers.
Detailed explanation-3: -The fossil record of whales, for instance, has a set of several well-defined members that lead inevitably to modern whales. Fossils have been found of coyote-sized semi-aquatic predators which were thought to live amphibious life-styles near the shore.