1. Fossils, the preserved remains or traces of ancient life, are priceless treasures.
They tell of life-and-death struggles and of mysterious worlds lost in the mists of
time. Taken together, the fossils of ancient organisms make up the history of life
on Earth called the fossil record. How can fossils help us understand
life's history?

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10