The causative agent for pam, a rare but severe brain infection, was found to be naegleria, an amoeboid protozoan living in warm freshwater. under which phylum should it be classified and why?

a.) zooflagellata, because it lives in warm freshwater

b.) sporozoa, because it is a disease-causing protozoan

c.) sarcodina, because it has an amoeboid body

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

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