What is the major cause of the changes in weather in an area over the different seasons? a. proximity to the ocean
b. number of mountains in an area
c. tilt of the earths axis
d. distance from the sun

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

Use the distance formula to determine weather each pair of segments have the same length

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?