Which two features indicate that a cell is a plant cell and not an animal cell. a. lysosome, vacuole b. cell membrane, flagella c. cell wall, vacuole d. nucleus, lysosome

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

What is called the "building block" of life?

Variety of living organisms; includes genetic, species, and ecological types.