You are presented with the question "Bottleneck effect can occur with " and the following answer choices: - external migration - direct damage to the lungs - Movement of an air mass - competition - if humans disturb bears - competing for resources - Plant growth is reduced - Temperature changing Now knowing that bottleneck effect occurs when a population suddenly gets much smaller and population growth is reduced by external migration, choose the best answer.
external migration

You are presented with the question "what causes the speed of an object to decrease" and the following answer choices: - kilometers - kinetic energy - Electrical energy - increase h2o - principals of aerodynamics - basic building blocks of life - opposing motion force - increase oxygen Now knowing that friction causes the speed of an object to decrease and friction is a Force that opposes motion, choose the best answer.
opposing motion force

You are presented with the question "If two balanced objects act on an object in opposite directions, the object will" and the following answer choices: - bent - behave - cool off - friction - Temperature - not move - survive - run away Now knowing that if two balanced forces act on an object in opposite directions then that object will remain stationary and objects can be stationary or moving with constant linear velocity, choose the best answer.
not move

You are presented with the question "What helps animals survive?" and the following answer choices: - vegetation - rivers - valleys - traits - Pituitary gland - kinetic energy - hibernation - rocks Now knowing that an animal requires warmth for survival and vegetation is required by many animals for warmth and security, choose the best answer.
vegetation