Two male bighorn sheep butt heads to determine who gets the right to breed with a local group of females; a pack of wolves coord
inate their strategy to attack a struggling newborn elk; a male peacock displays his feathers to entice a nearby hen to mate; and a school of tuna scatters and then reforms as a shark dashes quickly among them. all of these interactions represent _____.
All of these represent something called "competition and predation", in which the species competes for strength, or when one species coordinates attacks against a prey species, or when one species hunts another.
Amphibia is the class of vertebrates which is considered to be the first to develop lungs. This allowed amphibians to live successfully on land as terrestrial organisms. Ichthyostega was the first primitive amphibians with nostrils and lungs. Amphibians adopted themselves to live on land with developed lungs.
