Answer:
anterograde amnesia
Explanation:
Here, Greg is not being able to recall new memories but remembers his old memories. This is a case of anterograde amnesia.
People who have anterograde amnesia lose their explicit memory (declarative memory) but retain their procedural memory.
Procedural memory is the memory which is in the background of a person's conciousness. For example, writing your signature is considered as procedural memory.
Answer: Genetic Drift
Explanation: Genetic drift is an evolutionary mechanism whereby gene or allele frequency of a particular population change over generations due to random chance. The effect of genetic drift is most visible in small population due to reduction in population size resulting from natural disaster or splitting of a small group from the main population to formation a colony. However, it can occur in large population as well but it's effect is as strong as that occurring within a small population.
The genetic drift among the Dunkers could be attributed to the official split between conservatives and progressives members in 1882.
Answer:
They modified the Greek alphabet to create the alphabet that is widely used today.
Explanation:
siliceous
Deep seafloor deposition in the form of ooze is the largest long-term sink of the oceanic silica cycle (6.3 ± 3.6 Tmol Si year−1). As noted above, this ooze is diagenetically transformed into lithospheric marine chert.
calcareous
Calcareous ooze is a calcium carbonate mud formed from the hard parts (tests) of the bodies of free-floating organisms. Once this mud has been deposited, it can be converted into stone by processes of compaction, cementation, and recrystallization. ... Foraminifera are also single-celled organisms.
