HELP PLEASE Which statement BEST describes the effect a mutation of a gene will have on an organism?

1, Mutations are corrected by the cell, and do not affect the organism
2. Mutations cause harmful effects, such as cancer or birth defects
3. Mutations generate new traits that are beneficial for the organism
4. Mutations can be harmful, beneficial, or not affect the organism at all

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?