Which of the following is true about glassy igneous rocks?

cooled very slowly

cooled very rapidly

cooled in two stages

Twin boys have girlfriends one of the couples have a baby would the dna of the lil baby be the same as the couples dna bc the boys are identical twins

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Dna replication allows the basic.units of.heredity found on segments of dna called to be passed on from parent to offspring.