One difference between cell division in plant cells and in animal cells is that plant cells have... A. centrioles.
B. centromeres.
C. a cell plate.
D. chromatin.

How does the release of trapped gases in magma cause a volcano to erupt? a. they push the magma up the pipe and then are reabsorbed into the magma chamber. b. they cause the magma to change chemically into lava. c. the gases form vents that allow the magma to flow out. d. the gases rush out and carry the magma with them.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back