Identify the type of nuclear reaction that occurs when an alpha or a beta particle is spontaneaously emitted by a radiactive isotope

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Drug abuse will not lead to physical and psychological dependence. true or false ?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?