13). Atoms are the basic unit of matter
14). Elements (pure substances, one type of atom) and Compound (made up of two or more types of atoms)
16). Chemical change
17). If a rock is changed or broken and stays where it is, it is weathering. If pieces of pebbles and soil from the rock are moved by natural forces, it is erosion
Hope that helps
Autotrophes
They make their food through photosynthesis.
Hope this helps.
Answer - B
Reason - Since the area is in the tropics there will be time to time heavy precipitation, which over time the decomposed nutrients will get washed down into a run off and depleted.
Answer:
Light travels faster than sound
Explanation:
