Which of these are NOT found in plant cells? a)cell membranes

b)centrioles

c)mitochondria

d)cell walls

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.