Answer:
Mesolithic Era
Explanation:
The Climate, geographical condition, and biological diversity in The Mesolithic era is drastically different from the current condition because the era was formed shortly after <em>the Last Glacial Maximum.</em>
Before last glacial maximum, the environment surrounding Europe is still covered in ice sheets. After the last glacial maximum period. the temperature in this territory started to rise. Causing a change in climate, land forms, and the type of organisms that can survive.
Signal at least 100 ft before making a turn.
System is a set of particles or interacting components that are considered a distinct physical entity
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A system can be considered as a set of components that are interactive in nature and these components must be considered as a whole. A system can be defined by the function and it can be described by the structure. It functioning of the system is mainly affected by the environment.
There are three different types of system that includes open, closed and isolated system. The system components when united forms the system and when these components are considered as a separate unit the functionality of the system can not be completed.
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Aids in Africa is considered a pandemic .