A cinder block is sitting on a platform 20 m high. It weighs 7.9 kg. The block has Calculate it.
energy

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast

All phases of matter may have a fixed mass