A student is observing a group of cells under a microscope. What observation would help her conclude that they are plant cells? Question 16 options: The presence of nuclei can be clearly detected within each cell. The cells appear well-defined, indicating the presence of cell walls. The presence of mitochondria can be clearly detected within each cell. The cytoplasm in which the cell organelles are embedded can be clearly seen.

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.

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam

The scientific method is limited to investigating physical phenomena that are which of the following? select all that apply. observable repeatable falsifiable unique measurable