Field mice are sexually-reproducing organisms. in a population of field mice, traits that promote survival and reproduction are likely to over time. traits that do not promote survival and reproduction are likely to

Traits that promote survival and reproduction are likely to over time, while traits that do not promote survival and reproduction are likely to decrease over time. This is part of the natural selection process, which is the process that consistently make populations adapted, or better-suited for their environment, over time.Because traits that do not promote survival and reproduction are not essential they will decrease over time.  

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.