Are all tumors caused by cancer pls my friend is writing a story she is desperate, she needs her 8s so she can go HUMMINAH HUMMINAH I GET GOOD GRADE

Which system revise and send electrical signals throughout the 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

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment