Which range of sound waves can be reflected and used for finding distances, scanning documents, and cleaning engine parts PLZ Help‍♂️‍♂️‍♂️‍♂️

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

Sort the examples by the type of diversity that they exhibit a park has 80 species of trees red, yellow, and orange bell peppers are all members of the same species individuals of the same lizard species have different mating strategies. five different bird species are at a bird feeder. genetic diversity species diversity

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast