The last universal common ancestor (Luca) would have had which of these characteristics? Ability to interact with and respond to the environment

Able to consume other organisms

Self-replication

Subject to natural selection

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

b) the inside picture would look at a very high temperature in a very low ph

what is this saying?