All cells have (select all that apply.) an outer membrane or plasma membrane cytoplasm a cell wall a nucleus protoplasm large vacuoles chloroplasts

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.