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News tagged with biological costs

Warm-blooded dinosaurs worked up a sweat

(PhysOrg.com) -- Were dinosaurs endothermic (warm-blooded) like present-day mammals and birds or ectothermic (cold-blooded) like present-day lizards? The implications of this simple-sounding question go beyond ...

Biology / Plants & Animals

created Nov 11, 2009 | popularity 5 / 5 (6) | comments 1

Why Don’t More Animals Change Their Sex

(PhysOrg.com) -- Most animals, like humans, have separate sexes — they are born, live out their lives and reproduce as one sex or the other. However, some animals live as one sex in part of their lifetime and then switch ...

Biology /

created Feb 02, 2009 | popularity 5 / 5 (3) | comments 3