Students are observing different samples using a microscope. They group them into two groups: living and nonliving. Which samples would they group together as living things? Select all samples that are living things.
A-Sand
B-Skin Cells
C-Sheet of Paper
D-Thin Sheets of Metal
E-Thin Section of a Leaf

What was carolus linnaeus' classification system of organisms based on? a. physical characteristics of organisms b. food habits of organisms c. habitat of organisms d. size of organisms

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

Which of the following is an example of a tissue on the digestive system a. the stomach b. smooth muscle that lines the stomach c. nerve cells in the stomach d. enzyme molecules in the stomach