The epidermis of the skin consists of many layers of tightly packed cells. the outermost layer of cells are dead. which best describes why this occurs?
chemical compounds containing digestive enzymes are located on the outside of the skin, and they destroy the cells.
blood vessels are not located in the epidermis, but in the underlying dermal connective tissue.
the outer layer of skin is nervous tissue and nervous tissue will not regenerate.
pathogens on the skin secrete toxins that affect the cellular structure, thus destroying the cell.

Select the word from the list that best fits the definition a system made of 25 satellites

What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?