To enter or leave cell, substances must pass through

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d

Explain in your own words what caused pangea to separate and why we don't worry about earthquakes in florida.