please help this is for a presentation.. Is the spongy parenchyma cell unicellular or multicellular?

What is one benefit of a non renewable resource, such as natural gas? a. generates large amounts of electricity b. less expensive c. produces pollution d. will run out eventually

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes