Abacterium suddenly cannot manufacture proteins. what component[s] of the cell is [are] not working? saprophyte? ribosomes? plasmid? finbria? which one?

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Which of the following was a social cost associated with the development of the internal combustion engine used in most cars? a. people were able to use their horses for new tasks. b. new jobs were created. c. blacksmiths needed to gain new skills to continue working. d. families were able to travel farther more easily.

How can dna be useful in phylogeny? a. dna sequences are rearranged to predict how species could evolve in the future. b. dna sequences from different species can be compared, giving us more information about their evolutionary relationships. c. dna from every organism in a clade is sequenced to identify genetic mutations that have occurred. d. dna isn't useful in phylogeny, as morphological characteristics are used exclusively in phylogeny.