If i'm doing a science fair, and i want to do
"can plants stop soil erosion ''
with my two variables beings a illumiam pans filled with soil one with no seeds one with seeds , which one is my dependent variable and which is my independent variable

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

What is the coldest temperature ever recorded in san antonio?