"Which of the following fish should be avoided because of high mercury content"? a. sardines b. cod and sole c. most shellfish d. salmon and tilapia e. swordfish and tilefish

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

All other things being equal the size of a population will decrease if

Apopulation follows a period of decline; overshoot increase; overshoot increase; scarcity scarcity; dieback