What must a scientist do in order to develop a testable hypothesis? O A. Find out whether the idea would be interesting to other scientists. O B. Determine whether the conclusion is supported by popular opinion. C. Ask a question that can be answered by making observations. D. Research accepted scientific theories to find one that is wrong.

Темирказык жулдызынын жулдыздык шамасы 2,02, ал веганын жулдыздык шамасы 0,03. осылардын кайсысы жарык жане неше есе жарык?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.