Choose the letter of the best match: Prevention of embryo implantation
A. birth control pill
B. intrauterine device
C. diaphragm
D. foams and jellies
E. vasectomy
B. intrauterine device
Biology & Microbiology
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The majority of bacterial DNA is negatively super coiled
Indicate whether the statement is true or false
Biology & Microbiology
Archaeopteryx is an important link between
a. mammals and birds b. lizards and birds c. dinosaurs and birds d. crocodiles and birds e. non-flying birds and flying birds
Biology & Microbiology
The oystercatcher is a member of the:
a. gulls. b. tubenoses. c. shorebirds. d. pelicans. e. albatrosses.
Biology & Microbiology
The 12.011 in the diagram for Carbon specifies:
a. The number of protons in Carbon b. The number of neutrons in Carbon c. The number of electrons in Carbon d. The atomic number of Carbon e. The atomic mass of Carbon
Biology & Microbiology