The cell theory has three main components. Which three scientists’ conclusions formed these components?
Hooke, Schwann, and Virchow
Hooke, Leeuwenhoek, and Schleiden
Leeuwenhoek, Schleiden, and Schwann
Schleiden, Schwann, and Virchow

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.

Which atmospheric later is where earths northern and southern lights occur