Answer:
d. cells can neither be created or destroyed
First two statements were given by Schleiden and Schwann and the the third statement was given by Virchow.
Answer:
a mucus or a gelatinous sheath
Explanation:
Most species of cyanobacteria are enclosed in a gelatinous sheath which is made up of proteins.
It protects the Earth from becoming over heated, but with pollution, global warming has become more apparent because of the destruction of the ozone layer
Answer: O many celled organisms
Explanation: