Asolution that is a 4 on the ph scale is a a. weak acid b. strong acid c. weak base d. strong base

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.

What came first egg or chicken? and is tomato a vegetable or a fruit?

What are some possible short and long term medical concerns for crew members on longer space exploration trips