Architectural term for the minimal stimulus that starts a nerve impulse, like pain
It's the process by which an organism or cell takes in oxygen & expels carbon dioxide
A species of this 10-armed animal is the largest invertebrate, reaching a length of over 50 feet
You might be "As happy as" this mollusk that has a heart but no brain
The name of these microscopic plants & animals that float near the ocean's surface is from the Greek for "wandering"
Around 1905 it was discovered that the American eel spawns in this "sea" in the north Atlantic
This French explorer devised special underwater cameras to document his adventures
Linnaeus only recognized 2 biological kingdoms; everything was either plant or this
Muscles may connect directly onto bones or connect to them by these
Measles, mumps & rabies are not transmitted by bacteria, but by these