Unlike the cell membrane, the cell wall is a

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

What type of plant is good for a bioassay and where can i buy it? i only have a month.