Drag the labels to their appropriate locations on the diagram below, indicating the function of each structure during muscle contraction filament that is pulled toward the center of the sarcomere protein that controls access to motor protein binding sites sites at which Ca2* ions are bound binding site for motor protein head filament that pulls the other filament toward the center of the sarcormère motor protein head that hydrolyzes ATP and drives contraction Adapted from Biology by Campbell and Reece 2008 Pearson Education

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.