Which term describes the zone of life on the Earth that includes all living things? atmosphere biosphere magnetosphere lithosphere PLS HELP ASAP PLS

How do you transfer mrna into codons ? i'm so confused : (

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

Which are reasons cells undergo cell division?