What kind of radiation is emitted in following nuclear reaction? 234 90 th -> -ie + 234 91 pa (alpha, beta, gama, positron)

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

Can someone i have no idea of how to do this.

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.