Freshwater Actinopterygii live in a ________________ environment and thus tend to _____________ water across their gills. 

Which of the following is false about birds ?

Lungfish eggs are externally fertilized and develop outside of the parental body. This is an example of 

The following organism is a member of what class? 

The following is a member of what class? 

All chordates share which of the following features? 

Which of the following are able to burrow into mud and breathe atmospheric oxygen for long periods of time to live through a dry season? 

Which of the following is not a characteristic of Aves? 

If you are a utilitarian, then you could never justify the use of torture.

The pacifist argues that the greatest good for the greatest number of people is realized when countries engage in war.