Many amniotes have fenestrae; what benefit does having fenestrae give an organism?
Group of answer choices
ALLOWS FOR MORE FLEXIBILITY OF THE NECK MUSCLES
ALLOWS ORGANISMS TO RUN AT HIGHER SPEED
ALLOWS FOR A STRONGER BITE FORCE
ALLOWS FOR FEATHER AND SCALE ATTACHMENTS
Flag this QuestionQuestion 32 pts
If you were to chase a lizard, you’d find that chase to be short-lived, as lizards don’t run for long distances. Why?
Group of answer choices
LIZARDS HAVE DELICATE ANKLE BONES THAT DON’T ALLOW LONG-DISTANCE RUNNING
LIZARDS COMPRESS (SQUEEZE) THEIR LUNGS WHEN THEY RUN, SO THEY CANNOT BREATHE
LIZARDS SIMPLY DO NOT WEIGH ENOUGH TO RUN
LIZARDS HAVE DEFENSES THAT ALLOW THEM TO SURVIVE PREDATOR ATTACKS, LIKE POISONOUS SKIN SECRETIONS
Flag this QuestionQuestion 42 pts
Evidence that at least some dinosaurs may have been ‘warm blooded’ include:
Group of answer choices
PRESENCE OF BLOOD VESSELS IN SPINES
LIMBS BEING ROTATED UNDER THE BODY
INTERNAL FERTILIZATION
PRESENCE OF EGG LAYING
Flag this QuestionQuestion 52 pts
Walter Alverez discovered a layer of iridium dated to 65 million years ago (iridium: atomic number 77); why might this have been a clue towards how the non-avian dinosaurs went extinct?