(Q).
The surface of a beach is formed by mechanical weathering, and most beaches are of white coral sand. Given these facts, sand can be formed by which process among the following options: - Continents drifting - mechanical waves - Photosynthesis - Sand Casting - movement of tectonic plates - Cellular Respiration - evaporation - Mechanical Weathering
(A).
Mechanical Weathering

(Q).
Rest has a positive impact on a health, and good health and enough rest are important. Given these facts, what is important among the following options: - rest - heat - sugar - copper - living - oxygen - O3 - pH
(A).
rest

(Q).
Rivers are usually larger than streams, and watersheds are creeks, streams and rivers. Given these facts, what are rivers among the following options: - dangerous - storing water - watershed - kalenchoes - they bend - rainy - kinetic - strong
(A).
watershed