For Questions 21 to 22, indicate whether the statement is True or False. Give an explanation. 21. When a gas filled in a cylinder fitted with a movable piston is allowed to expand, the
work done by the gas is positive.
22. When a body is lifted, the work done by the gravitational force is positive.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Create 3 equivalent fractions using the area model for 2/5create equivalent fractions using number lines for 1/2create equivalent fractions using multiplying for .3/4brainliest

Which of the following is evidence to the past existence of glaciers?