Science Crossword Puzzles
Environmental Chemicals
methane : a flammable greenhouse gas, fluoride : added to water to strengthen bones and teeth, oxygen : waste product from photosynthesis, chlorine : toxic gas …
Excretory Systems
urethra : duct through which urine is expelled to the outside., excretory : system that eliminate waste from the body, ureters : ducts that connects kidneys and …
GENE THERAPY
gene : cannot be directly inserted into human gene, genome : the entire set of dna instructions found in a cell, mutated : change or cause to change in form, …
Movement Into and Out of Cells
diffusion : the movement of molecules across a membrane from high to low concentration, flaccid : a description of a plant cell that is soft, mitochondria : …
Lymphatic Puzzle Expedition
lymphnodes: they are small bean-shaped tissues situated along lymphatic vessels., bonemarrow: it is the primary site for the production of lymphocytes., spleen: …
