(Question)
Cells are organized into tissues, and tissues form organs, and skin is a protective organ. Given these facts, cells form tissues, which form among the following options: - water - muscle - plants - gametes - bushes - retina - air - skin
(Answer)
skin

(Question)
Faulting of rock in Earth 's crust causes earthquakes, and earthquakes and tremors are common in Yellowstone. Given these facts, faulting of rock in Earth 's crust causes what among the following options: - friction - conversion - mitosis - loose soil - tremors - Movement - crust - waves
(Answer)
tremors

(Question)
Hydropower requires damming a river, and many dams along rivers and creeks help prevent floods. Given these facts, hydropower requires what among the following options: - a hydraulic system - increases a body's strength - helping to prevent floods - Electric generators - flow of electrons - energy of moving objects - power stations - fissures of hot, acidic water
(Answer)
helping to prevent floods