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.
Answer:
to take precise measurements and do experiments
The human reproductive system is regulated by the endocrine system.
Answer:
1. slump ; 2. mudflow ; 3. landslide
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