Why do some species survive while others go extinct?

Which of the following lines (of latitude or longitude) would be represent by 180 South Pole Equator Prime meridian North Pole International day lind

A gas is collected from a radioactive material; upon inspection, the gas is identified as helium. the presence of the helium indicates the radioactive sample is most likely decaying by

Susan applies a force of 150 N to slide a box to meters across the floor. George applies a force of 20 Susan applies a force of 150 N to slide a box to meters across the floor. George applies a force of 200 N to lift a box 1 meter off the floor.

Under what conditions will an electrical current flow in a wire or light a bulb

An object with a density of 0.85 g/cc is dropped into each of the two beakers shown below. Beaker 1 has a density of 0.5 g/cc. Beaker 2 has a density of 1 g/cc. What will happen to the object in each case?

Which process causes wells on land to become saline, making them unusable for drinking water? A. Erosion B. Echo sounding C. Eutrophication D. Groundwater infiltration

A farmer uses a tractor to pull a 150 kg bale of hay up a 15∘ incline to the barn at a steady 5.0 km/h. The coefficient of kinetic friction between the bale and the ramp is 0.40. Part A What is the tractor's power output?

Identify the conditions for an elastic collision in a closed system. Check all that apply. Energy is conserved. Velocities may change. Momentum is conserved. Kinetic energy is conserved. Objects stick together after the elastic collision.

When the velocity of a mass on a spring is zero, the acceleration is at

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.