Answer the questions about the graph: 1. Based on the trend depicted in the graph, explain what you think the relationship might be between organisms performing respiration and the organisms performing photosynthesis in this area of the world.

2. What effects might this steady increase of carbon dioxide have on the organisms living in this area?

3. Describe the changes you would expect to see to this graph if the population of cyanobacteria increased dramatically in the ocean water surrounding Hawaii in 2003. Explain your predictions.

Which of the following structures is not found in both plant and animal cells? a) chloroplast b) cytoskeleton c) ribosomes d) mitochondria

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.

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above