The death of Vladimir Lenin and the rise of Joseph Stalin, I believe.
Answer:
Acid rain etc.
Explanation:
Climate change, ocean acidification, carbon emissions, urbanisation, wastewater treatment, ozone depletion, water contamination, species extinction, and other environmental issues affect every individual, plant, and nation on earth.
These worldwide ecological threats are unlike those that mankind has previously encountered.
D. filling important government positions with party supporters
Answer:
spectroscope is a device that helps us find out the content of stars by splitting light into spectra and wavelengths. It usually disperses white light from a star and splits them into a very wide spectrum of colors. It grants diffraction to an optical component with a periodic structure that splits and diffracts light into several beams. This beams travels in different directions and different colors will be seen. When we wish to attain a resolution closer to the designed value we need to install additional slit at the inlet of the spectroscope.
Explanation:
The spectroscope is also known as spectrometer. It functions by breaking down lights into different wavelengths which is made up of. Light incoming into a spectroscope usually carry spectral information. A spectroscope consists of a slit, a dispersing element, a focusing objective and a collimator.
