(Q).
Fact 1: The mass of an object causes the gravitational force exerted by that object. Fact 2: Gravity accelerates mass. Given the two facts above, answer the question "What accelerates an object?" with the following options: - transportation technology - chemical messengers - kinetic energy - electromagnetic energy - gravitational force - flow of electrons - a hydraulic system - heat energy
(A).
gravitational force

(Q).
Fact 1: Migrants typically travel long distances. Fact 2: Migrant birds leave. Given the two facts above, answer the question "what typically travels long distances?" with the following options: - camels - humans - jets - trains - ants - dogs - snails - birds
(A).
birds

(Q).
Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Fertile topsoil is then lost in erosion. Given the two facts above, answer the question "Deepening rivers cause" with the following options: - relocation - the loss of topsoil - Plant growth is reduced - to move people - Physical weathering - forest is destroyed - Water expanding - water conservation
(A).
the loss of topsoil