Which one of these productive methods is the only one available to mosses and ferns
1. sperms
2. spores
3. eggs
4. seeds

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

When ash and dust begin to settle on the ground, they eventually become compacted by

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary