What does this image represent about population the black dots represent population?

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Which type of neuron stimulates muscles to contract?

What is the next step in muscle contraction after the actin changes shape