Which element provides strength to the exoskeletons of clams and oysters? sulfur
oxygen
hydrogen
phosphorus

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.