Erosion causes a river to become deeper and wider, and clearing of land can lead to erosion of soil into the river. Given these facts, what makes a river wider among the following options: - rainfall - salinity - arteries - flow of electrons - Water expanding - Physical weathering - a hydraulic system - clearing land
clearing land

Some viruses can cause cancer, and eventually the cancer kills. Given these facts, what can some viruses do among the following options: - cure cancer - death - kill - create hydrogen - grow - damage - kill electrons - harm
kill

Balance is the ability to sense and maintain body position, and another part of the inner ear is used for balance. Given these facts, this helps with sensing and maintaining body position: among the following options: - lightheaded - sweating - inner ear - cochlea - four limbs - nerves - Riding a bike - dizzy
inner ear

Transportation technology is used for moving people, and cars can kill people or they can transport people. Given these facts, what are a transportation technology among the following options: - tractor - bike - Cars - email - motors - crane - fibers - rivers
Cars