Which body system is responsible for bringing oxygen into the body?

The digestive system

The respiratory system

The circulatory system

The musculoskeletal system

Heat conduction can not take place between two objects if ... a) the total thermal energy of the two objects is the same b) the objects are in contact c) the temperatures of the two object are different d) the two objects are in thermal equilibrium

Two tables each have a mass of 29kg If the graviton always force between them is 4.24 x 10 to the power of - 10 N how far apart are they? G=6.67 x 10to the power of - 11 N. (m/kg) to the power of two

In an electrically neutral atom of any element, there are equal numbers of A) protons and neutrons. B) electrons and protons. C) electrons and neutrons. D) atomic number and atomic mass

The active sections that are located along fault lines are called A. seismic gaps. B. seismic risks. C. stress accumulations. D. recurrence gaps

If you could travel with speed of light (3.0e5 km/s) it would take only 2.5 minutes to reach venus. how far is venus from earth in km?

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's

Which vocabulary term is survival of the fittest

An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s2?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.

A moon with a mass of 6.0 x 10 kg orbits about a planet with a mass of 5.0x 10^24 kg. They are 4.0 x 10^8 meters apart What is the gravitational force between them? The answer is 1.