What term best describes the skeletal system in Echinodermata?

Which characteristic of the phylum Chordata functions to strain food particles from the water?

What structure do birds use to produce song?

What is ecology? What is the difference between a population, community, and ecosystem? 

This question is for extra credit. There is no penalty or loss of points for skipping this question or for a wrong answer. This question is worth 2 bonus points. Points are based on detail. What is sexual dimorphism? Give an example from lecture.

Many sharks and skates have leathery eggs called _____________.

Moraxella catarrhalis is the microorganism that causes Otitis media in children

Any microbe capable of causing disease or infection

HAI’s were reported by category as how many surgical site infections (SSI’s)

It is okay to not educate the patient prior to surgery