1. is the second answer I believe and 2. is the first answer
I hope this helps
Base on one of the Law of Thermodynamics, the amount of available energy decreases whenever energy is changed in form (which includes a transfer from one trophic level to another). So, as we go from the first trophic level to the top trophic level, the amount of available energy becomes less and less.
Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
Analagous structures. For example, both penguins and dolphins have torpedo shaped heads that help them adapt to their enviroments. They were both in different environments, but they developed similar adaptations to increase their ability to survive in their environments.
