The cell membrane protects the cell, separates the internal and external environments, and does not allow any material to enter or exit the cell.

Weathering deposition and cementation are all involved in the formation of a rock. what type of rock is it? A foliated metamorphic B chemical sedimentary C organic sedimentary D clastic sedimentary

Cabbages have 18 chromosomes. How many chromosomes do each of the daughter cell produced by mitosis have?

A glacier will move by sliding when the base of the ice and the underlying rock are separated by a thin layer of?

1) Some people believe that certain drugs such as marijuana should be legalized. Do you agree or disagree? 2) What impact might legalization have on forensic science as a field? Which drug presents the greatest challenges to forensic science? Why?

A student conducts a science fair project to determine whether or not eating peanut butter increases short-term memory. What would probably NOT be a major concern for the student doing a science fair project?

Which describes the habitat of a frog?

The size of a population refers to the

An electric current will always follow a. the path of least resistance. b. a path toward the north pole. c. a path toward the south pole. d. the path that leads through insulators.

What are some questions that biologists might ask about the living things they study?

A volcanic eruption causes melting of glaciers. Which of these Earth systems interact during this event? A atmosphere and biosphere B atmosphere and hydrosphere C geosphere and cryosphere D geosphere and biosphere