Which scientist looked closely at cork in 1663, seeing a structure similar to his room at the monastery, and called it a cell?
a. hans janssen
b. robert hooke
c. lorenz oken
d. rudolph virchow

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Describe two recent or ongoing space missions.