Answer:
Division of these two groups occurred after the protostome developmental sequence appeared
True...........................
Answer: The observation clearly shows that certain behaviors are genetically controlled
Explanation:
From the observation, the Fishers bird uses long strip while the Peach-faced uses short strips and there offspring uses intermediate. It is an indication that the behavior of the length of strips cut by the bird is under genetic control and it can also be concluded that both the Fisher bird or Peach-face bird does not have complete dominance over length of strips cut for nest making.
When a geologist working in stratified rocks observes a limestone bed with oyster fossils overlain by beds with clam and echinoderm fossils indicative of marine conditions, the fossils probably indicate ----- that the environment had changed as the sea level rose and it displaced the oysters environment with marine conditions represented by the clams and echinoderms.
