Answer:
When the plates are at the mid ocean ridges thay are spreading apart creating new ocean floor. this is also called a divergent boundary
This provides the soil with nutrients. When the remains of the crops decompose they release nutrients into the ground rather than leaving the ground barren
Answer:
4
If the beaker was not cleaned, starch could have been in it.
The independent variable is the one that can be changed
I think the correct answer would be water temperature because on the table, the water temperature is increasing by 10 each time so it is changing.
hope I'm right and hope I helped :)
