Answer:
Due to its high magnification power.
Explanation:
A scientist used a light microscope to view an algal cells because light microscope is able to magnify objects up to about a thousand times. Various cellular organelles, such as nuclei, chloroplasts, and mitochondria etc can also be seen clearly with the help of light microscope so that's why scientist used light microscope to study algal cells.
Answer:
Choose different ways to get around your city. Walk, bike, skateboard, scooter, take public transit, as many times a week as you can. Focus especially on those short trips–for example, buy a shopping trolley and walk to the grocery store if possible.