What has been the overall impact of the new program on the spread of zebra mussels?

Which of the following is an example of this type of co-evolution

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Solutions to environmental problems in europe must