Which types of mechanical weathering are most likely represented? A) Frost wedging, B) root wedging, C) salt weathering, D) heat expansion
A) Salt weathering, B) root wedging, C) pressure release, D) lichen growth
A) Heat expansion, B) lichen growth, C) salt weathering, D) abrasion
O A) Abrasion, B) root wedging, C) heat expansion, D) salt weathering

Maria wanted to grow a fern in her backyard. acting on a suggestion from a friend, she collected brown dots from the underside of a fern's leaves and then potted them. after a few days, maria saw small fern leaves erupting from the pot. which statement explains this phenomenon? a. the fern transitioned from gametophyte generation to sporophyte generation. b. the fern grew as a result of mitosis. c. the fern transitioned from sporophyte generation to gametophyte generation. d. the fern grew to be genetically identical to its parent plant.

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

What enzyme is most important for dna replication and why?