Which of the following terms best describes the heart's function in a living organism?

A.

a pump

B.

a sponge

C.

a lock

D.

a lever

How does the Doppler effect related to the universal expanding?

Will Na2S and CuSO4 combine to form a precipitate

Application of boyle's law a 12-liter tank contains helium gas pressurized to 160 atm. part b what size tank would be needed to contain this same amount of helium at atmospheric pressure (1 atm) ?

Free branliest to who ever finds out this what does the symbol O represent on the periodic table

One of the hopes for solving the world's energy problem is tomake use of the fusion reaction: How much energy is released when one mole ofdeuterium is fused with one mole of tritium according to the abovereaction?

How does a solid turn into a liquid

What does the Ka represent in the equation and why is it important?

Is an american alligator a autotroph?

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.