Explanation:
Yams are produced through slips, which have been generated again from sprouts of mature yams, rather than seeds, as most other crops are. Split a yam in part and place one half in a bowl of cool water to develop sprouts.
Vestigial structures. These are structural elements that once served a purpose but as the organism evolved now serves no purpose.
Resistor
An electrical component that limits or regulates the flow of electrical current in an electronic circuit
Hope this helps!
C) The core contains equal amounts of hydrogen and helium
