Why are farming practices like terraced fields important in terms of soil conservation? A. They help limit the amount of soil that is produced, which is essential because soil is a renewable resource.
B. They help limit the amount of soil that is produced, which is essential because soil is a renewable resource
C. They cause nutrients in the soil to leak out, which is essential because plants need nutrient-poor soil.
D. They prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.

answer I think it is (C) not sure

which three statements are true about all alloys?

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.