Plz, limited ! genetics is involved in which of the following weight-related areas of the body? a. the production of the hormones leptin and ghrelin. b. it causes us to want to exercise more. c. it has no effect on a person's metabolic rate.

Am i correct on these two physics questions?

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.

Avolleyball player’s hand applies a 39 n force while in contact with a volleyball for 2 seconds. what is the impulse on the ball? 20 n • s 37 n • s 41 n • s 78 n • s