What was the likely size of the impact object that created a crater 100 km in diameter on the Moon?
(Mark the one best answer.)
a 100 km
b 50 km
C 5 km
d 0.2 km

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.

Archaebacteria use for movement. celia flagella pili cell walls

Across of blue x blue (both heterozygous) would result in