Water is a ionic molecule covalent molecule polar covalent molecule simple compound

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome