Changes in the environment result in . a. geologic eras c. plate tectonic changes b. physical changes in species d. all of the above

According to the passage weisers mother could be blamed for

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its