Describe how the polarity of Earth’s magnetic field is recorded in the sea-floor.

How did the club fungi get its name? a. it is named for the club-shaped seeds it produces. b. it is named for the way individual species grow together in small groups called “clubs.” c. it is named for the club-shaped area where it produces spores. d. it is named for the club-like mechanism it uses to kill its prey.

All other things being equal the size of a population will decrease if

Approximately how many times does an average human heart beat in a lifetime?