Name some specialized cells in the human body

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

Some substances but not other can cross the (blank) membrane of a cell