Shania wanted to see if eating apples would help her do better on her class work, the first day she didn't eat any apples. On day 2, she ate one apple; on day 3 she ate 2 apples; and on day 4 she ate 3 apples. Each day she recorded her grades on her science work. What is the (Independent variable, depended variable, and control)

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

i believe the answer would be b. hope it : )

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this