The ‘filtering factories’ of the excretory system are called a. rectum. b. alveoli. c. nephrons. d. bronchi. the answer is c nephrons

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Adepositional also feature that forms where a stream enters a lake or an ocean is a