Name two different units that might be used to measure volume?

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above