The water in the Salt River flows at an average speed of 5 km/hr. If you and a friend decide to canoe down the river a distance of 16.5 km, how many hours and minutes will it take?Immersive Reader

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

you can have just about every answer you can think of

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.