Original source of energy for killer whale​

Iwanna go do something with my ideas? ?

Are the layers of rock above and below the coal older or younger?

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%