1. B 2. C 3.A 4. A molecule is when two or more atoms join together. An element makes up the atoms that form molecules. 5. Similarities include both are cells and each cell are surrounded by cell membranes. 6.A fish is an organism and a rock is not because fish contain the characteristics needed for life, while a rock does not.
An organism that can live in only one particular environment or that can survive on only one type of food would be called a specialist.
Important muscle electrical signals is the movement of charged material (ions) across cellular membranes in a limited area
Answer:
so like a plant that loses leaves in the fall does so because it won't have sun in the winter. then they grow back. it adapts to the environment