The answer is B. the occurrence of huge events in Earth's natural history
The geologic time scale is a system of chronological dating that relates geological strata to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.
178 of each species
178 protons
178 neutrons
And 178 electrons
Answer:
C) Covalent bonds come about because of a sharing of electrons; ionic bonds do not.
Explanation:
There are two main types of chemical bonds- covalent and ionic/electrovalent bonds.
Ionic bond: Ionic or electrovalent bonds are characterized by the transfer of electrons from electropositive atoms (metals) to electronegative atoms (non-metals). The metal atoms after donating their electrons become positively charged ions (cations) while the non-metal atoms after accepting electrons become negatively charged ions (anions). Strong electrostatic forces of attraction constitutes ionic bonds.
Covalent bond: Covalent bonds are formed by the sharing of electrons by the atoms involved in the bond; usually between atoms of comparable electronegativities or atoms of the same element. The shared electrons are contributed by each of the atoms involved in the bonding or may be contributed by only one of the atoms. In covalent bonding, molecules rather than ions are formed.
Answer:
it's a segment
Explanation:
it has multiple end points
Answer is: <span>B) inner core.
</span>The Sun interior is divided into three regions: the inner core<span>, the </span>radiative zone<span> and the </span><span>convection zone.
</span><span>The inner core is the central region of the Sun and all solar energy is produced in the core by nuclear fusion.
</span>Radiative zone is a<span>round the inner core and in this area</span><span> energy is transported by </span>radiation.
The convection zone is the outer-most layer of the interior and in this area energy is transported by convection.
