Delay what is the required mass ratio to achieve an exhaust velocity of 2.455 km/s with a specific impulse of 294 seconds? choose one. a. 2.34 b. 2.12 c.3.12 d.5.11 e. 4.33

Discuss how relative and absolute dating are used to assign ages to rocks. specifically, how are the two dating methods different from each other? discuss the technique of absolute dating commonly used to date rocks.

Identify the type of weathering seen in each picture ? chemical weathering mechanical weathering

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation