Which of these statements describes a limitation of the Antarctic treaty system

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Construct at least two possible hypotheses for the student’s experiment.