Which of the following statements about radioactive decay is true? (1 point) ORadioactive decay is the rate at which new atoms form.
O During radioactive decay, atoms break down, releasing particles or energy.
OThe rate of decay of a radioactive element cannot be approximated.
OThe number of radioactive atoms in a sample will always remain constant.

B) During radioactive decay, atoms break down, releasing particles or energy.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

answer; both surfaces of the membrane are nonpermeable