Answer:
Energy is contained within the pond ecosystem and is transferred within the system.
The Cell, the fundamental structural unit of all living organisms. Some cells are complete organisms, such as the unicellular bacteria and protozoa, others, such as nerve, liver, and muscle cells, are specialized components of multicellular organisms. In another words, without cells we wouldn't be able to live or function correctly.
I believe that would be estrogen.
A learned behavior is a behavior towards responding to a stimulus.In this case, the characteristic of a mink which is leaned will be to release a smelly fluid from a scent gland when threatened.In addition,a learned behaviour occurs when an individual acquires changes in their behaviour which is obtained from their daily interaction with the environment.
All life has a common ancestor which can be traced through different lineages. Due to the fact that any new generation comes from two parents who do not share the same features. As the number of generations increases the resemblance to previous ancestors begins to minimize. For example I have brown eyes just like my mother, however, my great great grandmother had hazel eyes.