Which statement supports the theory that chloroplasts evolved from cyanobacteria
a. chloroplast have dna.
b. chloroplast are created by cells.
c. chloroplast last lack an outer membrane.
d. chloroplasts synthesize their own proteins.

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

What are levels of ecology and how can we remember them

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed