Astudent used a microscope to get a very detailed look at pollen grains from an apple tree. in order to do this, the student first had to prepare the pollen grains to withstand the vacuum conditions and high energy beam of the microscope. the image below shows the student's view of the pollen grains through the microscope.

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

What pattern of migration do whales follow?

Two critical interventions to turn around the opioid crises are: