Two velocities can be combined. Because of it, you must account for direction. The effects of the two velocities can be determined by doing what mathematical operation or vector math on the following: a. A surfer paddling with the current
b. A surfer paddling 90° to the current c. A surfer paddling against the current

a. 35°c

b. 25°c

c. 10°c

d. 40°c

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.