What is an example of a blood agent?

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

Models are non-visual ways of coummincating how someone thinks about something in the natural world

What is the importantence of the carbon and nitretan cycles in the environment