When an animal switches between sexual and asexual reproduction it is called Parthenogenesis.
Ice floats<span> on water </span>because<span> hydrogen bonding makes liquid water unusually dense</span>
Answer:
Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things
<span>blastocyst
The outer layers of the blastocyst turn in to the trophoblast after implantation. The trophoblast forms the placenta.</span>
