Answer:Primary succession occurs on land that is new and has never had a flora and fauna example: glacier retreats, lava flows. Secondary succession occurs on land that has been cleared example: by fire, of flora and fauna, but which still has viable seeds and spores in the soil.
Answer:
Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... According to Mendel, what kinds of genes "disappear" in F1 pea plants? ... The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) ... A tall plant with purple flowers crossed with a dwarf plant with white flowers ...
Explanation: