Meat sharing can be considered an example of cooperation among primates. Which of the following is NOT a cooperative behavior observed among primates? a. warning calls
b. nut cracking
c. grooming
d. group hunting
e. caring for a subadult by someone other than the mother

e.

Explanation:

The correct answer would be caring for a subadult by someone other than the mother.

Cooperation or cooperative actions are those actions that are carried out by two or more individuals in order to achieve a common goal or goals.

Warning calls are carried out by one or two individuals in order to warn those around of a particular danger. Nut cracking among primates requires the collective efforts of many individuals. Grooming is a social behavior among primates that requires the cleaning up and maintenance of boy hygiene of an individual by another individual. Group hunting involves the collective efforts of a group of primates.

The only option that does not require cooperation is caring for a subadult by someone other than the mother.

The correct option is e.

Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.

Explanation:

Geological time starts with Precambrian time.

Geologically, time is divided between the Precambrian era and present time into era.

The three eras are Paleozoic era, Triassic period and Cenozoic era.

Era is further divided into periods.

Scientists use radio carbon dating to study fossils and rock formation. With this study they were able to divide them in exact geological scale.

Geologic scale is the record of events in earth's history and evolution.