Please help me!! List 2 animal groups and tell why there needs to be hierarchy and how it benefits the population.

A.

B.

List a population of animals in family or group setting and the roles that each play.(An example: Wolves
that each member has in it's family)
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Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

Both destructive and constructive, the natural event seen here, is important in destroying and creating landforms on earth. what is this event called? a) deposition b) flooding c) landslide d) sedimentation